Question:medium
The value of $\cos^{-1}\left(\cos\frac{2\pi}{3}\right)+\sin^{-1}\left(\sin\frac{2\pi}{3}\right)$ is equal to
The value of $\cos^{-1}\left(\cos\frac{2\pi}{3}\right)+\sin^{-1}\left(\sin\frac{2\pi}{3}\right)$ is equal to
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Logic Tip: Always map arguments back into the appropriate principal range (Quadrants 1 \& 4 for sine, Quadrants 1 \& 2 for cosine) using ASTC rules before canceling the function with its inverse.
Updated On: Apr 27, 2026
- $-\frac{\pi}{2}$
- $-\frac{2\pi}{2}$
- $\frac{\pi}{2}$
- $\frac{\pi}{3}$
- $\pi$
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The Correct Option is
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