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In a spherical triangle ABC right angled at C, sin b equals to
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A triangle has a base x and an altitude y. A second triangle has a base twice the altitude of the first triangle, and an altitude twice the base of the first triangle. What is the area of the second triangle?
∆ABC এর ক্ষেত্রে- i. যদি ∠A = B = ∠C তবে ∆ABC সমবাহু ত্রিভুজ ii. যদি ∠A, ∠B এবং ∠C, প্রত্যেকে সূক্ষ্মকোণ তবে ∆ ABC সূক্ষ্মকোণী ত্রিভুজiii. ∠A = B + C হলে ∆ABC সমকোণী ত্রিভুজনিচের কোনটি সঠিক?
A point D is taken on the side BC of a right-angled triangle ABC, where AB is hypotenuse. Then
sin 75∘ + sin 15∘sin 75∘ - sin 15∘ = ? 
sin-1x + sin-1y = π2  হলে x2+ y2 এর মান কত? (If sin-1x + sin-1y = π2  what is the value of x2 + y2?)
In a right angled triangle the horizontal side measures 8 cm and the vertical side measures 12 cm. What is the area of the triangle?
If a, b, and c are three sides of a right angled triangle triangle, which of the following statements cannot be true?