Mathematics

Problem

## EXERCISE 2.2 15.

\tan ^{-1} \sqrt{3}-\cot ^{-1}(-\sqrt{3})

is equal to (A)

\pi

(B)

-\frac{\pi}{2}

2 \sqrt{3}

(A)

\pi

(B)

-\frac{\pi}{2}

2 \sqrt{3}