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1. |
Write `cot^(-1)(1/(sqrt(x^2-1))),|x|>1`in the simplest form. |
Answer» let` x=sectheta` then `theta=sec^(-1)x` =`cot^(-1)(1/sqrt(sec^2theta-1))` =`cot^(-1)(1/tantheta)` =`cot^(-1)(cottheta)` =`theta` from (1) =`sec^(-1)x` |
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