\(\cos^{-1}\left(\frac{\sqrt{2}}{2}\right)\) का मान क्या है?
What is the value of \(\cos^{-1}\left(\frac{\sqrt{2}}{2}\right)\)?
Explanation opens after your attempt
Correct Answer
B. \(\frac{\pi}{4}\)
Concept
Since \(\cos\frac{\pi}{4}=\frac{\sqrt{2}}{2}\) and \(\frac{\pi}{4}\in\left[0,\pi\right]\). Remember the table of special values.
Why this answer is correct
The correct answer is B. \(\frac{\pi}{4}\). Since \(\cos\frac{\pi}{4}=\frac{\sqrt{2}}{2}\) and \(\frac{\pi}{4}\in\left[0,\pi\right]\). Remember the table of special values.
Exam Tip
\(\cos\frac{\pi}{4}=\frac{\sqrt{2}}{2}\) और \(\frac{\pi}{4}\in\left[0,\pi\right]\)। विशेष मानों की तालिका याद रखें।
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