alleryযখন ঠিক চারটে বাজে, তখন কাঁটা দুটির মধ্যবর্তী কোণ কত ডিগ্রি হয়?
A60°
B90°
C120°
D150°
Answer & Solution
Correct answer: C. 120°
4:00 টায় ঘণ্টার কাঁটা 4 x 30 = 120°-তে থাকে এবং মিনিটের কাঁটা 0°-তে থাকে।
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