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s344n2d4d5 [400]
3 years ago
15

Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.

Mathematics
1 answer:
stich3 [128]3 years ago
5 0
We are asked to express cos^ 3 x in terms of  powers of trigonometric functions not greater than 1

cos ^ 3 x is equal to cos x * cos^2 x. 
<span>cos^2 x = 1 - sin^2 x.
</span>sin^2 x  = (1 - cos 2x) /2 

the answer is cos ^ 3 x = cos x * (1 - <span> (1 - cos 2x) /2 )</span>




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