MCQ
यदि $\tan ^{-1} x=\frac{\pi}{4}-\tan ^{-1} \frac{1}{3}$, तब $x=$ ?
- ✓$\frac{1}{2}$
- B$\frac{1}{4}$
- C$\frac{1}{6}$
- Dइनमें से कोई नहीं
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