cotA+tanA=2cosec2A. Prove it.
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Answer:CotA+tanA=2cosec2A
Step-by-step explanation:
L.H.S.
=cosA/sinA-sina/cosA
=(cos^2A-sin^2A)/sinA.cosA
=(cos2A)/(1/2.sin2A)
=2.(cos2A/sin2A)
=2.cot2A
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