Integration?
posted by Arisa .
Use the derivatives of sinx and cosx to show that d/dx [tanx] = sec^2 and that d/dx [secx]=sec^2xsinx.
Hence evaluate ∫ [1 + sinx]/[cos^2x] dx limit from 0 to pi
I know the first part of the question, i'm not sure how i should do the second part "hence ..."
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