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| 1. |
`(d)/(dx)[tan^(-1) ""(sqrt(1+cos""(x)/(2)))/(sqrt(1-cos""(x)/(2)))]` का मान होगाA. `-(1)/(4)`B. `(1)/(4)`C. `-(1)/(2)`D. `(1)/(2)` |
| Answer» Correct Answer - B | |