\(\cos^{-1}\left(\cos\frac{5\pi}{6}\right)\) का मान क्या है?
What is the value of \(\cos^{-1}\left(\cos\frac{5\pi}{6}\right)\)?
Explanation opens after your attempt
B. \(\frac{5\pi}{6}\)
Concept
The angle \(\frac{5\pi}{6}\) lies in the principal range \(\left[0,\pi\right]\). Hence \(cos^{-1}\left(cos\frac{5\pi}{6}\right)=\frac{5\pi}{6}\).
Why this answer is correct
The correct answer is B. \(\frac{5\pi}{6}\). The angle \(\frac{5\pi}{6}\) lies in the principal range \(\left[0,\pi\right]\). Hence \(cos^{-1}\left(cos\frac{5\pi}{6}\right)=\frac{5\pi}{6}\).
Exam Tip
\(\frac{5\pi}{6}\) मुख्य परिसर \(\left[0,\pi\right]\) में है। इसलिए \(cos^{-1}\left(\cos\frac{5\pi}{6}\right)=\frac{5\pi}{6}\)।
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