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Question

Mathematics Question on Trigonometric Functions

The value of cos1(cos(7π6))\cos^{-1}(\cos(\frac{7\pi}{6})) is equal to

A

7π6\frac{7\pi}{6}

B

π6\frac{\pi}{6}

C

π3\frac{\pi}{3}

D

2π3\frac{2\pi}{3}

E

5π6\frac{5\pi}{6}

Answer

5π6\frac{5\pi}{6}

Explanation

Solution

The correct option is (D) : 5π6\frac{5\pi}{6}