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If a Cosθ-bSinθ=c. Prove that aSinθ+bCosθ= a^2+b^2+c^{2 } step by step ​

Answer» If a Cosθ-bSinθ=c. Prove that aSinθ+bCosθ= a^2+b^2+c^{2 } step by step ​


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