alleryএকটি 12 m খুঁটির ছায়ার দৈর্ঘ্য 12 m। সূর্যের উন্নতি কোণ কত?
A30°
B90°
C45°
D60°
Answer & Solution
Correct answer: C. 45°
উন্নতি কোণের Tan হলো 12/12 = 1, যার অর্থ 45 ডিগ্রি।
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