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If (\cos \theta=\frac{1}{2}) and (0<\theta<2\pi), what are the values of (\theta)?यदि (\cos \theta=\frac{1}{2}) और (0<\theta<2\pi), तो (\theta) के मान कौन से हैं?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (\frac{\pi}{3},\frac{5\pi}{3})(\frac{\pi}{3},\frac{5\pi}{3})
For ( \cos \theta=\frac{1}{2}), the reference angle is ( \frac{\pi}{3}), and cosine is positive in the first and fourth quadrants. In exams write both solutions up to (2\pi).(\cos \theta=\frac{1}{2}) के लिए reference angle (\frac{\pi}{3}) है और cosine प्रथम व चतुर्थ चतुर्थांश में धनात्मक है। परीक्षा में (2\pi) तक के दोनों हल लिखें।
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