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3.2k views
in Trigonometry by (30.3k points)
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Prove that

cot\(\frac{x}{2}\) - tan\(\frac{x}{2}\) = 2cotx

cotx/2 - tanx/2 = 2cotx

1 Answer

+1 vote
by (29.9k points)
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Best answer

Here multiply and divide L.H.S by 2

∴ L.H.S = R.H.S, 

Hence proved

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