यदि \(\cos^{-1}x=\frac{\pi}{3}\) हो तो (x) का मान क्या है?
If \(\cos^{-1}x=\frac{\pi}{3}\), what is the value of (x)?
Explanation opens after your attempt
Correct Answer
A. \(\frac{1}{2}\)
Concept
Taking \(\cos\) on both sides gives \(x=\cos\frac{\pi}{3}=\frac{1}{2}\). The angle lies in the principal range so the answer is valid.
Why this answer is correct
The correct answer is A. \(\frac{1}{2}\). Taking \(\cos\) on both sides gives \(x=\cos\frac{\pi}{3}=\frac{1}{2}\). The angle lies in the principal range so the answer is valid.
Exam Tip
दोनों तरफ \(\cos\) लेने पर \(x=\cos\frac{\pi}{3}=\frac{1}{2}\) है। कोण प्रधान सीमा में है इसलिए उत्तर मान्य है।
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