railway RRB Group D Mock Test Series 2024-25 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If \(\cos ^2 θ=\frac{3}{4}\), where θ is an acute angle, then the value of sin (θ + 30°) is:
1
1
2
\(\frac{1}{\sqrt{2}}\)
3
\(\frac{1}{2}\)
4
\(\frac{\sqrt{3}}{2}\)