Q30 of 865 Page 20

Evaluate the following integrals:

∫ cotx log sin x dx

Assume log(sinx) = t


d(log(sinx)) = dt


⇒


⇒ cot x dx = dt


Substituting the values oft and dt we get


⇒


⇒


But t = log(sinx)


⇒ .


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