prove that sin(180°+ theta)= cos(90°+ theta).
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Answer:
sin(180°+ theta)=cos(90°+ theta)
LHS
Sin(180°+ theta) = sin(theta) = cos(90°+ theta)
LHS=RHS.
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Answer:
Lhs
sin(180+theta)=cos(90+theta)
-sin theta = sin theta
1
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