sinA -2 sin³A/2 cos³A - cosA =tan A
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Answer:
Tan A
Step-by-step explanation:
sinA- 2 sin³A/2 cos³A-cosA
sin A -(1-2 sin² A)/cos A (2 cos²A-1)
as we know sin²A= 1-cos²A
tanA*(2cos²A-1)/(2cos²A-1)
tanA , hence proved
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