Math, asked by bheemanianudeep, 5 months ago

cos(theta+alpha)cos(theta+alpha)+sin(theta+alpha)sin(theta+alpha)
a)cos2alpha
b)sin2alpha
c)cot2alpha
d)tan2alpha

Answers

Answered by snehaprajnaindia204

4

Step-by-step explanation:

Option (a)

$\cos(2 \alpha )$

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