$\cot \theta = \frac{4}{3}$ এবং $\pi < \theta < \frac{3\pi}{2}$ হলে—
i. $\sin \theta = \frac{3}{5}$
ii. $\cos^2 \theta = \frac{16}{25}$
iii. $\text{cosec } \theta \cdot \sec \theta = \frac{25}{12}$
নিচের কোনটি সঠিক?
i. $\sin \theta = \frac{3}{5}$
ii. $\cos^2 \theta = \frac{16}{25}$
iii. $\text{cosec } \theta \cdot \sec \theta = \frac{25}{12}$
নিচের কোনটি সঠিক?
Dinajpur • 2023