If acosθ+bsinθ=p; asinθ-bcosθ=q, prove: a2+b2=p2+q2 - Maths - Introduction to Trigonometry

Question

I f   a cos θ + b sin θ = p ;   a sin θ -
b cos θ = q ,   p r o v e :   a 2 + b 2 = p 2 + q 2

Neha Sethi · Accepted Answer

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https://www meritnation
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I f a cos θ + b sin θ = p ; a sin θ - b cos θ = q , p r o v e : a 2 + b 2 = p 2 + q 2