Math, asked by mahazaibjaffar, 9 months ago

(Cosx-Sinx)(1+2Sin2x)=Cos3x+Sin3x

Answers

Answered by aryan073

1

Step-by-step explanation:

cosx(1+2sin2x)-sinx(1+2sin2x)

cosx+2sin2xcosx-sinx-2sin²2x

=cos3x+sin3x OK friend

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