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defon
1 year ago
12

Which set of steps can be used to prove the sine sum identity, sin(x + y) = sin(x)cos(y) + cos(x)sin(y)?

SAT
1 answer:
icang [17]1 year ago
7 0

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).

<h3>What is trigonometry?</h3>

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.

Learn more about trigonometry

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Read an excerpt from the nobel lecture by al gore: now science is warning us that if we do not quickly reduce the global warming
Crank

The theme of the given speech is the warning for the care of the natural resources as it turn into disaster.

<h3>What is a theme?</h3>

A theme is given as the message that has been delivered with the talk, play or the speech or any other art or literature practice.

The excerpt given is comprising the speech related to the environmental issues and the warning about the proper care to be taken. It is mentioned that the resources may turn in the disaster. Thus, the theme of the excerpt is given as to take care of natural resource to stop the disaster.

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5 0
1 year ago
Pls help me, thank you!
Licemer1 [7]
I think it’s B


Hope it’s correct
6 0
3 years ago
like all equilibrium constants, the value of kw depends on temperature. at body temperature (37∘c), kw=2.4×10−14.
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Answer:

The concentration of  [ H3O^+] is 1.6 × 10^−7.

Hope I helped! ☺

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