Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1. cos^4(x)
Added by Consuelo L.
Step 1
Step 1:** Apply the power reduction identity to cosine of x to the fourth power: cos^4(x) = (cos^2(x))^2 cos^4(x) = (cos(2x) + 1)/2)^2 ** Show more…
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