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How to prove sin 2x = 2 sin x cos x | Proofs of Trigonometric Identities sin 2x = 2sin x cos x

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sinx=2sin(x/2)cos(x/2) trigonometry identities solve that

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Value of the Limit of 8√2-(cos x+sin x)^7 /√2-√2sin 2x for x tends to π/4 is equal to:| IITJEE Maths

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Prove that : sinx = 2sinx/2 cosx/2

Find sinx/2, cosx/2 and tanx/2 in ecah of the following : cos x=-1/3, x in quadrant III.

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