cosec θ + cot θ =12 হলে, cosec θ + cot θ =কত? ক 2 খ -1 গ 1 ঘ -2 cosec θ + cot θ =12 হলে, cosec θ + cot θ =কত? সঠিক উত্তর 2 Bissoy MCQ Team Nov 19, 2024