inv-trig

Question: ${{\cos }^{-1}}\frac{1}{2}+2{{\sin }^{-1}}\frac{1}{2}$is equal to



1) $\frac{\pi }{4}$
2) $\frac{\pi }{6}$
3) $\frac{\pi }{3}$
4) $\frac{2\pi }{3}$
Solution: Explanation: No Explanation
Inverse trigonometric functions

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