the value of sin theta cos(90 degree-theta)+cos theta sin(90 degree-theta) is what
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cos (90-θ)= sinθ
sin (90-θ)= cos θ
given
sin θ cos (90-θ)+ cosθ sin (90-θ)
= sin θ * sinθ + cos θ* cos θ
= sin^2 θ + cos^2 θ
= 1
sin (90-θ)= cos θ
given
sin θ cos (90-θ)+ cosθ sin (90-θ)
= sin θ * sinθ + cos θ* cos θ
= sin^2 θ + cos^2 θ
= 1
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