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kow [346]
3 years ago
9

Rewrite with only sin x and cos x. (6 points) cos 2x - sin x

Mathematics
1 answer:
velikii [3]3 years ago
4 0

Answer:

The answer is a. cos2x - sin2x - sin x. Use the rule: cos2x = (cos^2)x - (sin^2)x. So, substitute cos2x in the expression: cos2x - sinx = ((cos^2)x - (sin^2)x) - sinx = (cos^2)x - (sin^2)x - sinx. Therefore, choice a. is correct choice.

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PLEASE HELP! which answer is correct??
Solnce55 [7]
Option( c ) is the correct one.
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x= (3+y)/2
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3 years ago
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pashok25 [27]

Answer:

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3 0
2 years ago
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bixtya [17]
3rd one
Reason: 
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