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Trigonometry : - Compound and multiple angles; proving Sin(A+B) and Cos(A+B): -- 29
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Compound and multiple angles . Proving Sin(A+B) = SinA.CosB + CosA.SinB
Cos(A+B) =CosA.CosB -- SinA.SinB
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Cos(A+B) =CosA.CosB -- SinA.SinB
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