state gov UP Lekhpal Mock Test 2023 - 24 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If sin \(\theta \) = \(\frac{1}{2}\), then the value of cos 2\(\theta \) is :
1
\(\frac{1}{2}\)
2
\(\frac{1}{4}\)
3
\(\frac{1}{6}\)
4
\(\frac{1}{8}\)