cot θ - cosec θ =43 হলে cot θ - cosec θ =কত? ক -34 খ -43 গ 43 ঘ 34 cot θ - cosec θ =43 হলে cot θ - cosec θ =কত? সঠিক উত্তর -34 Bissoy MCQ Team Nov 19, 2024