What is the Formula of Cot (A – B) ?
Solution : The formula of cot (A – B) is \(cot A cot B + 1\over cot B – cot A\). Proof : We have, cot (A – B) = \(cos (A – B)\over sin(A – B)\) Using sin (A – B) and cos (A – B) formula, cot (A – B) = \(cos A cos […]
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