Math, asked by abhiyadav05091999, 6 months ago

sin(70+x)-cos(20-x)=0

Answers

Answered by Anonymous

3

Step-by-step explanation:

sin(70+x)-cos(20-x)=0

LHS

sin70 cosx + cos70 sinx - cos20 cos x - sin20 sinx

cos20 cos x + sin20 sinx - cos20 cos x - sin20 sinx

=0=RHS

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