Rewrite the expression as an equivalent expression that does not contain powers of triogonometric functions greater than 1.
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Rewrite the expression as an equivalent expression that does not contain powers of triogonometric functions greater than 1.
power reduction identity ...Quote:
Originally Posted by purplec16
Rewrite the expression as an equivalent expression that does not contain powers of triogonometric functions greater than 1.
... it comes from the double angle identity for cosine.