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whatlifeforme
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Homework Statement
solve the integral.
Homework Equations
integral (5pi/6 to pi) (cosx)^4 / sqrt(1-sinx) dx
The Attempt at a Solution
Following the solution manual:
integral (5pi/6 to pi) ( (cosx)^4 / sqrt(1-sinx)) * sqrt(1+sinx)/sqrt(1+sinx)
however i am not sure how to do the algebra here.
it should convert to integral (5pi/6 to pi) ( (cosx)^4 / sqrt(1-sin^2x)) * sqrt(1+sinx) dx