Math, asked by dfcv1625, 6 months ago

If sin A =1/2, then the value of 3 cos A -4cos³A is *

Answers

Answered by vishu1010

0

Answer:

cosA = √3/2 (cosx=B/H)

Now,

3cosA - 4cosB = 3√3/2 - 3√3/2 = 0

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