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DanielleElmas [232]
4 years ago
10

Rewrite with only sin x and cos x. cos 3x

Mathematics
1 answer:
Feliz [49]4 years ago
4 0

Answer:

cos(3x) --> cos³(x) - 3sin²(x)cos(x)

Step-by-step explanation:

The text in pink are the trig identities I used to convert cos(2x) and sin(2x) into their other equivalent forms.

This question is pretty much asking if you know how to use your trig identities if i understand it correctly.

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on a recent test matthew got 18 out of 40 problems correct at the same rate how many problems would matthew get correct if there
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27

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18/40 = 27/60

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3 years ago
What is the answer to f(x)-3x^2-2
aleksklad [387]

Answer:

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3 years ago
The sum of two numbers is 39. The second number is 6 more than half of the first number. Let a represent the first number and le
inn [45]

Write 2 equations:

a +b = 39

and b = 1/2a + 6

Now replace b in the first equation with the second one:

a + 1/2a + 6 = 39

Combine like terms:

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Subtract 6 from each side:

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Divide both sides by 1 1/2:

a = 33 / 1 1/2 = 33 / 1.5

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8 0
4 years ago
Read 2 more answers
12=4-4x<br>PLEASE HELPPP​
Alex_Xolod [135]

Answer:

-2

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4x=4-12

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And answer is - 2

4 0
3 years ago
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