alleryএকটি কেন্দ্রস্থ কোণ হল 80°। একই বৃত্তচাপের উপর বৃত্তস্থ কোণটি কত?
A40°
B160°
C20°
D80°
Answer & Solution
Correct answer: A. 40°
একই বৃত্তচাপের উপর কেন্দ্রস্থ কোণ বৃত্তস্থ কোণের দ্বিগুণ, তাই 80/2 = 40 degrees।
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