alleryএটা ত্ৰিভুজৰ কোণসমূহৰ অনুপাত 2:3:4। আটাইতকৈ ডাঙৰ কোণটো কিমান?
A70°
B80°
C60°
D90°
Answer & Solution
Correct answer: B. 80°
9 টা ভাগে 180 ডিগ্ৰী ভাগ কৰে, গতিকে প্ৰতিটো ভাগ 20 ডিগ্ৰী আৰু আটাইতকৈ ডাঙৰটো হ'ল 4 x 20 = 80 ডিগ্ৰী।
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