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The value of $\tan ^{-1}\left(\tan \frac{3 \pi}{4}\right)+2 \cos ^{-1}\left(\cos \frac{7 \pi}{6}\right)$ is: |
$17 \frac{\pi}{12}$ $37 \frac{\pi}{12}$ $-25 \frac{\pi}{12}$ $-31 \frac{\pi}{12}$ |
$17 \frac{\pi}{12}$ |
The correct answer is Option (1) → $17 \frac{\pi}{12}$ |
