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Simplify the expression by using a double-angle formula or a half-angle formula. (a) cos2 θ 2 − sin2 θ 2

Simplify the expression by using a double-angle formula or a half-angle formula. (a) cos2 θ 2 − sin2 θ 2
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4 votes
Simplify the expression by using a double-angle formula or a half-angle formula. (a) cos2 θ 2 − sin2 θ 2

asked
User MicFin
by
7.2k points

1 Answer

4 votes
If this is supposed to be

cos^(2)θ-sin^(2)θ
Then this can simply be reduced to

cos2θ
by the double angle formula for cosine



answered
User Zeeshan Ahmad II
by
8.9k points
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