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I need the answer as soon as possible 2 7 4 **36. If cos x + cos y= and cos X - cos y =

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2 7 4 **36. If cos x + cos y= and cos X - cos y = 5 Take L.H.S = cos x + cos y= 4/5 find the value of 14tan (%) +500 ( (-y 2 cot x+y 2 Sol

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