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Question Number 61147 by malwaan last updated on 29/May/19

$$\mathit{p}\mathit{r}\mathit{o}\mathit{v}\mathit{e}$$$$\int \frac{1+cosx}{1-cosx}dx=-2cot\frac{x}{2}-x+c$$$$$$

Answered by tanmay last updated on 29/May/19

$$\int \frac{2{cos}^2\frac{x}{2}}{2{sin}^2\frac{x}{2}}dx$$$$\int ({cosec}^2\frac{x}{2}-1)dx$$$$=\frac{-cot\left(\frac{x}{2}\right)}{\frac{1}{2}}-x+c$$$$=-2cot\left(\frac{x}{2}\right)-x+c$$

Commented by malwaan last updated on 29/May/19

$$thankyousir$$$$canyousolveitbytrig.sub.?$$

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