Find the values of each of the following:

    12. \cot(\tan^{-1}a + \cot^{-1}a)

Answers (1)

We have to find the value of   \cot(\tan^{-1}a + \cot^{-1}a)

As we know \left [\because \tan^{-1}x + \cot^{-1} x = \frac{\pi}{2} \right ]   so,

Equation reduces to \cot(\frac{\pi}{2}) = 0.

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