The set of the steps used to prove the sine sum identity are use the complementary relationship between sine and cosine to rewrite sin(x + y) as Cosine (Start Fraction pi over 2 End Fraction minus (x + y) ). Apply the cosine sum identity. Then simplify, using sin( –y ) = –sin(y) and cos(–y) = cos(y).
What is trigonometry?Trigonometry is the study of side, length and angles of the triangle. There are some formulas to solve trigonometry which we have to memorize.
Thus, the correct option is A.
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Answer:
Its A
Explanation:
The town should regulate the height of buildings allowed on main street
Answer:
Yes they should legit lol
Golf ball sized basketballs are often packed in cylindrical canisters
The correct statement about the circumference (C) and the height (h) is gotten as; C > h
How to find the circumference of the cylinder?The formula for circumference of a cylinder is;
C = 2πr
Now, we are not given the radius of the cylinder but we are told that there are 3 balls that fit perfectly into the cylindrical canister. Each having a diameter of 1.68 inches.
Thus;
Radius; r = d/2 = 1.68/2 = 0.84 inches
Height of cylinder will be;
h = 3d = 3 * 1.68
h = 5.04 inches
Circumference; C = 2π * 0.84 = 5.28 inches. Thus;
C > h
The complete question;
Golf ball size basketballs are often packed in cylindrical canisters. The diagram below shows three balls in a canister. Let C be the circumference of the canister and let H be the height of the canister. Assuming each ball has a diameter of 1.68 inches and the balls fit snugly in the canister, which of the following statements is correct?
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An engineer is designing a television screen. the screen is shaped like a rectangle with a length of 43.6 inches. the ratio of the length of the rectangle to its width must be 16:9. what is the approximate length of the diagonal of the screen?
By using the given ratio, we will see that the diagonal measures 50 inches.
How to get the diagonal of the screen?First, we know that the ratio between length and width is 16:9, and the length is 43.6 inches, then the width will be:
W = (9/16)*43.6 inches = 24.5 in
Now, the diagonal will be equal to the hypotenuse of a right triangle with catheti of 43.6 in and 24.5 in, by using Pythagorean's theorem we get:
[tex]D = \sqrt{(43.6in)^2 + (24.5in)^2} = 50 in[/tex]
We conclude that the diagonal measures 50 inches.
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A reporter is planning to write a review of the newest restaurant in town for a city magazine. according to guidelines from the society of professional journalists, what should she do before she writes the review?
The reporter should dine at the restaurant without alerting the management that she is coming in to do a review.
Who is a reporter?A report is also a journalist, who is meant to investigate and provide true account of events in the society.
Their job is to investigate and must not be known because he or she is meant to provide true picture of the restaurant with regards to the above narration.
Hence, according to the society of professional journalists, the reporter should dine at the restaurant without alerting the management that she is coming in to do a review.
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Which phrase from the excerpt is the best example of nonstandard english? claimed that she had been cow kicking her from behind was an ironing board things throwed at it
Answer:
yes
Explanation:
yes
Answer:
b
Explanation:
Explain why the amount of money in the account at the end of the first year is given by the formula with n as the exponent:
Answer: This is the formula you use for someone investing in money. The formula is actually supposed to be: A
What brought large amounts of water into the city of rome? a. canals b. forums c. bridges d. aqueducts please select the best answer from the choices provided a b c d
Hello, hope this helps
Answer:
D. Aqueducts
Explanation:
They constructed these to bring water to many services such as public baths and latrines. Let me know if have any questions about this.
If you are involved in a minor crash and your vehicle is blocking the flow of traffic, you should
If you are involved in a minor crash that caused your vehicle to block the flow of traffic you should call a tow van for assistance.
What is a Tow Van?A tow van is a vehicle that is used to move a vehicle that is not operational.
The tow vehicle is equipped with a winch and hoist mechanism to enable it attach a vehicle to itself.
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Answer:
Attempt to move it out of the way.
Explanation:
What effect does the water cycle have on the total amount of water on earth?
There is an effect of water cycle on the amount of water on earth, due to green house effect, the water evaporates from the earth and rise the temperature of the earth.
What is water cycle?Water cycle is the circulation of water from the earth to atmosphere to back to the earth.
When the temperature rises, the water evaporates and goes into the atmosphere, where it condenses in the form of cloud and then rain on the earth.
Thus, the effect of water cycle on the amount of water on earth is due to green house effect, the water evaporates from the earth and rise the temperature of the earth.
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Which of these refers to the average distance or difference of a score from the mean of the data set?
The influential statistics are used to analyze the data sample so that a conclusion about the information is reached. The standard deviation is the average distance and the mean of the data set.
What is the standard deviation?Standard deviation in statistics is used to denote the dispersion of the information of the mean values also the average distance of the individual data to the mean is represented.
This allows the understanding of the data collected by the analyzer and lets the easy comparison of the information that was collected for the analysis of the research topic.
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Billy is analyzing a circle, y2 + x2 = 81, and a linear function g(x). will they intersect?
A function assigns the values. The function of the g(x) and the circle will intersect.
What is a Function?A function assigns the value of each element of one set to the other specific element of another set.
Given the points of the function g(x), therefore, plotting the points on the graph as shown below, also, plotting the circle on the graph, we will get the diagram as shown below.
Hence, the function of the g(x) and the circle will intersect.
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Since it was a school day denise thought it was peculiar
Answer:
what is the question?
Explanation:
no image, no real way to solve this problem
How much heat is absorbed when 2.8 mol nh4no3 is dissolved in water? the heat of solution of nh4no3 is 25.4 kj/mol.
The heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.
What is heat?Heat is the transportation of energy to or from a thermodynamic system.
By the formula of heat
[tex]\rm (n) \times (delta\;Hrxn) = (qrxn)[/tex]
Where n = moles
Delta Hrxn is molar heat
q = heat
Putting the values in the equation
[tex]\rm qrxn = (2.8 mol) \times(25.7 kJ/mol) = 71.96 kJ[/tex]
Thus, the heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.
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Sperm cells are able to swim in a fluid because they have
Answer: the flagellum
Explanation:
the tail of the sperm helps it move
How does the antagonist move the plot forward in this excerpt? nagaina moves the plot forward by running to the rat-hole, where rikki-tikki will destroy her. nagaina moves the plot forward by rustling her tail and turning her head round and round. rikki-tikki moves the plot forward by jumping up and down to confuse nagaina in their fight. rikki-tikki moves the plot forward by giving the egg to nagaina, thereby forcing her to run away.
Answer:
B
Explanation:
I’m smart
Answer:
a
Explanation:
Describe a time when you used repetition to help you remember information. was this a useful technique for you? why or why not? read more >>
Answer:
A time when I use repetition to help me remember information was whenever I had to do an assignment and they made me write a vocabulary word and its definition five times.
I don't think it was useful for me because I just remember being bored and My mind is not focused on it. So when the test came I didn't remember it from repetition I just remembered from studying.
Explanation:
Suppose that a family wants to start a college fund for their child. if you invest in an account that pays 5.5% and want the fund to have a value of $53,000 after 18 years, how much should you deposit monthly? assume an annuity due. a. $142.98 c. $143.49 b. $143.30 d. $145.52
Answer:
C. $143.49
Explanation:
This type of membrane protein enables cells to catalyse specific chemical reactions at the inner or outer surface of their plasma membrane.
Answer:
enzymes is your answer.
Based on the audio, what natural resources did julia observe? heat and wind sand and rocks water and ice wind and water
Since the audio was not given, answer will be subjective. Based on the audio, the natural resources did Julia observe is sand and rocks.
What is natural resources?Natural resources are known to be free resources that are given to us by nature. They are sand, rocks, air, etc.
Note that Since the audio was not given, answer will be subjective. Based on the audio, the natural resources did Julia observe is sand and rocks.
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Answer:
Water and ice
Explanation:
took the test
Climate refugees have migrated into areas already inhabited by people with different cultures, religions, and traditions, increasing the potential for conflict. stronger storms in the pacific and atlantic have threatened whole cities. millions have been displaced by massive flooding in south asia, mexico, and 18 countries in africa. as temperature extremes have increased, tens of thousands have lost their lives. we are recklessly burning and clearing our forests and driving more and more species into extinction. the very web of life on which we depend is being ripped and frayed. which evidence does gore use to support the idea that climate change is occurring?
The evidence which Gore used to support the idea that climate change is occurring are: "worldwide events and damages resulting from climate change."
What is climate change?Climate change can be defined as a negative change in the average atmospheric condition or weather of a geographical area over a long period of time.
In this context, the evidence which Gore used to support the idea that climate change is occurring in the above excerpt are worldwide events and damages that resulted from climate change."
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This is a public service announcement. two people sharing ear buds on a poster that reads, "spread music. not flu. even healthy people can get the flu, and it can be serious. everyone 6 months and older should get a flu vaccine. this means you. this means protect yourself, and those around you, by getting a flu vaccine." what is the purpose of this public service announcement? to encourage people to spend time with people who have the flu to inform people that they can catch the flu from their friends to inform people that sharing headphones can spread the flu to encourage people to take precautions against catching the flu
The purpose of this public service announcement is to spread awareness about being protected and stay away from the sharing.
What is flu?Flu also called as Influenza is the symptoms of fever, headache, muscle pain and weakness, dry cough, sore throat as well as a stuffy nose.
"spread music. not flu. even healthy people can get the flu, and it can be serious. everyone 6 months and older should get a flu vaccine. this means you. this means protect yourself, and those around you, by getting a flu vaccine."
This means that music can be spread by sharing but by sharing don't spread flu to your loved ones or friends. Take precautions till you get rid of their symptoms.
Thus, the purpose of this public service announcement is to spread awareness about being protected and stay away from the sharing.
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Answer:
Its B!
Explanation:
:D
Which phrase describes how dna provides evidence to support that life changes over time?
Answer:
some animals exhibit similar biological proteins
DNA contains the information which cells use to make proteins
DNA contains the coding for the formation of protein
similarity or differences in DNA show evolutionary relationships
DNA contains genes, which pass the instructions to produce and deliver proteins for the body, to synthesise
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Which scenario would most likely occur in a developing nation
Answer:
A new factory mostly employs laborers who have worked on farms their entire lives
Explanation:
How did frederick douglass push for an end to slavery brainly
Answer: Douglass regarded the Civil War as the fight to end slavery, but like many free blacks he urged President Lincoln to emancipate the slaves as a means of insuring that slavery would never again exist in the United States.
Which verb or verb phrase is in the correct tense to complete the sentence? yearn yearned did yearn will yearn
Answer:
it's the one that has action in it
Explanation:
verb is an action in a sentence, like run for example
Because of the dominance of the two-party system, ______________ candidates often struggle to raise both funds and the visibility of their campaigns.
Because of the dominance of the two-party system, third party candidates often struggle to raise both funds and the visibility of their campaigns.
What is two party system?The two-party system is the political system consisting of two major parties from same city or state rule over the state activities.
In a single state or area, two strong political parties rule dominantly over another parties. These parties are known as third-party candidates. They struggle in raising funds for their party and the campaigns. So, they are unable to come over and rule the state by defeating the two parties.
Thus, because of the dominance of the two-party system, third-party candidates often struggle to raise both funds and the visibility of their campaigns.
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Answer:
third party
Explanation:
In an effort to increase profits, southern bbq kitchen is attempting to appeal to a specific segment of the market by offering an all-you-can-eat buffet. these efforts, designed to identify specific groups that can be profitably served, represent an example of
Answer:
target marketing
Explanation:
they are targeting a certain group they believe would bring them the most business
When a coin is dropped, it falls to the ground. as the coin falls, it loses potential energy and gains what kind of energy?
Answer:
kinetic energy
Explanation:
As an object falls from rest, its gravitational potential energy is converted to kinetic energy
Which factor would affect photosynthesis the least
Answer:
Nitrate in the soil affect photosynthesis the least
What happens when you multiply both the numerator and the denominator of a fraction by 9?
