Find the value of cot(tan^−1a+cot^−1a).

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asked Jan 13, 2018 in Mathematics by sforrest072 (157,439 points) 63 448 1289
edited Jan 22, 2018 by sforrest072

Find the value of cot(tan−1a+cot−1a).

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answered Jan 13, 2018 by mdsamim (213,225 points) 5 10 23
selected Jan 13, 2018 by sforrest072
 
Best answer

The given function is cot(tan-1a+cot-1a).
∴cot(tan-1a+cot-1a)=cot(π/2)              [as tan−1x+cot−1x=π/2]

=0

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