Question
Download Solution PDFত্রিভুজ ABC-তে, AB = AC এবং ∠A = 70º। ∠C-এর মান নির্ণয় করো।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
ত্রিভুজ ABC তে, AB = AC এবং ∠A = 70º।
ব্যবহৃত সূত্র:
সমদ্বিবাহু ত্রিভুজে, ভূমি কোণ দুটি সমান হয়।
ত্রিভুজের তিনটি কোণের সমষ্টি = 180º
গণনা:
ধরি ∠B = ∠C = x
∠A + ∠B + ∠C = 180º
⇒ 70º + x + x = 180º
⇒ 70º + 2x = 180º
⇒ 2x = 180º - 70º
⇒ 2x = 110º
⇒ x = 55º
∴ সঠিক উত্তর হলো বিকল্প (4)।
Last updated on Jun 17, 2025
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