Trigonometry! #81

Geometry Level 3

Find the principal value of sin ⁡ − 1 ( sin ⁡ 2 π 3 ) \sin^{-1} \left(\sin \frac{2\pi}{3}\right)

This problem is part of the set Trigonometry .

5 π 3 \frac{5\pi}{3} 2 π 3 \frac{2\pi}{3} − 2 π 3 -\frac{2\pi}{3} None of these 4 π 3 \frac{4\pi}{3}

Omkar Kulkarni by Omkar Kulkarni , 22, India

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1 solution

Lu Chee Ket
Feb 3, 2015

Asin (Sin 120 d) = 60 d = Pi/ 3

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