(2-cos theta) whole square is equals to
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Answer:
LHS=(1−sinθ+cosθ)
2
LHS=1+sin
2
θ+cos
2
θ−2sinθ+2cosθ−2sinθcosθ
LHS=2−2sinθ+2cosθ−2sinθcosθ
LHS=2(1−sinθ)+2cosθ(1−sinθ)
LHS=2(1−sinθ)(1+cosθ)=RHS
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