Q) If sinθ-α=p and cosθ-β=q, prove that p2+q2+2pq sinα-β=cos2α-β - Maths - Trigonometric Functions

Question

Q) If sin θ - α = p   a n d   cos θ -
β = q , prove that p 2 + q 2 + 2 p q   sin α -
β = cos 2 α - β

Ahmad · Accepted Answer

answer
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Q). If sin θ - α = p a n d cos θ - β = q , prove that p 2 + q 2 + 2 p q sin α - β = cos 2 α - β