1.

If sin θ + cos θ = a, cos θ - sin θ = b, then sin θ (sin θ - cos θ ) + sin2θ(sin2θ−cos2θ)+sin3θ(sin3θ−cos3θ)+ . . .. . is equal to

Answer»

If sin θ + cos θ = a, cos θ - sin θ = b, then sin θ (sin θ - cos θ ) + sin2θ(sin2θcos2θ)+sin3θ(sin3θcos3θ)+ . . .. . is equal to




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