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What is the principal value of \(\cos^{-1}\left(-\frac{1}{2}\right)\)?\(\cos^{-1}\left(-\frac{1}{2}\right)\) का मुख्य मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \(\frac{2\pi}{3}\)\(\frac{2\pi}{3}\)
Since \(\cos\frac{2\pi}{3}=-\frac{1}{2}\) and \(\frac{2\pi}{3}\) is in the principal range, the answer is \(\frac{2\pi}{3}\).\(\cos\frac{2\pi}{3}=-\frac{1}{2}\) और \(\frac{2\pi}{3}\) मुख्य परिसर में है। इसलिए उत्तर \(\frac{2\pi}{3}\) है।
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