MCQ
$\cot ^{-1} \frac{1}{2}+\cot ^{-1} \frac{1}{3}=$_______.
- A$\frac{5 \pi}{4}$
- B$\frac{\pi}{2}$
- C$\frac{\pi}{4}$
- ✓$\frac{3 \pi}{4}$
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