railway RRB Group D Mock Test Series 2024-25 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
ଯଦି \(\cos ^2 θ=\frac{3}{4}\) , ଯେଉଁଠାରେ θ ଏକ ତୀବ୍ର କୋଣ, ତେବେ ପାପର ମୂଲ୍ୟ (θ + 30 °) ହେଉଛି:
1
1
2
\(\frac{1}{\sqrt{2}}\)
3
\(\frac{1}{2}\)
4
\(\frac{\sqrt{3}}{2}\)