Question

Упростить выражение.

Answer 1

Cos4α + Sin²2α = Cos²2α - Sin²2α + Sin²2α = Cos²2α

Answer 2

https://znanija.com/task/32064115

Answer 3

$cos(4 alpha ) + sin {}^{2} (2 alpha ) \ \ cos {}^{2} (2 alpha ) - sin {}^{2} (2 alpha ) + sin {}^{2} (2 alpha ) = cos {}^{2} (2 alpha )$

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