If x sin³A + y cos³A = sinA cosA and x sinA = y cosA, Prove that x² + y² = 1

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If x sin³θ + y cos³θ = sinθ cosθ and x sinθ = y cosθ, Prove that x² + y² = 1
If xsin3θ+ycos3θ=sinθcosθ and xsinθ=ycosθ, prove that x2+y2=1.
If xsin3θ+ycos3θ=sinθcosθ and xsinθ=ycosθ,then (x2+y2) is equal to. A. 2. B. 0. C. 3. D. 1.
If x sin^3θ + y cos^3θ = sinθ cosθ and x sinθ = y cosθ, prove that x^2 + y^2 = 1.
If x sin^3 theta+ y cos^3 theta = sin theta cos theta and x sin theta = y cos theta, Find the value of x^2 + y^2
If x sin^(3)theta + y cos^(3)theta = sin theta cos theta and x sin theta = y cos theta , prove that x^(2) + y^(2) = 1.
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