Question

y= sinx ki power cosx + underoot 1_c square
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Answer 1

Use Chain Rule, which is the derivative of the outside function times the derivative of the inside function.

The outside function is the square root of cos x, and its derivative is 1/2 (cos x)^(-1/2).

The inside function is cos x, and its derivative is - sin x.

By applying the Chain Rule, 1/2 (cos x)^(-1/2) * - sin x = ( - sin x)/ [2 (cos x)^(1/2)].