Find the value of ( ^ -1 a+ ^ -1 a ) - Vidyadip

MCQ

Find the value of $\cot \left(\tan ^{-1} a+\cot ^{-1} a\right)$

A
$\frac{\pi}{3}$
B
$\frac{\pi}{4}$
✓
$0$
D
$\frac{\pi}{2}$

✓

Answer

Correct option: C.

$0$

c
$\cot \left(\tan ^{-1} a+\cot ^{-1} a\right)$

$=\cot \left(\frac{\pi}{2}\right)$

$=0$

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