indefinite-integration

Question: $\int_{{}}^{{}}{\frac{\cos x}{(1+\sin x)(2+\sin x)}\ dx=}$



1) $\log [(1+\sin x)(2+\sin x)]+c$
2) $\log \frac{2+\sin x}{1+\sin x}+c$
3) $\log \frac{1+\sin x}{2+\sin x}+c$
4) None of these
Solution: Explanation: No Explanation
Integration of rational functions by using partial fractions Evaluation of various forms of integration

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