3 years ago

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

1 answer:

6 0

Cos^4(x) =
(cos²x)² =
(1-sen²x)² =
1² - 2*1*sen²x + sen^4x =
1 - 2sen²x + sen^4x

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