other govt exam SCL (Semi-Conductor Laboratory) Assistant Mock Test 2025 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
sec2 θ = \(\frac{4}{3}\) হলে cosec (θ + 30°)-এর মান কত? [θ একটি সূক্ষ্ম কোণ]
1
\(-\frac{2}{\sqrt3}\)
2
\(\frac{2}{\sqrt3}\)
3
\(\frac{1}{\sqrt3}\)
4
\(-\frac{1}{\sqrt3}\)