alleryএকটি সমকোণী ত্রিভুজের বাহুগুলি হলো 1, √3 এবং 2। 1 দৈর্ঘ্যের বাহুটির বিপরীত কোণের cosine কত?
A1/2
B1/√2
C√3/2
D1
Answer & Solution
Correct answer: C. √3/2
একটি 30-60-90 ত্রিভুজে 30 ডিগ্রির সংলগ্ন বাহুটি অতিভুজের √3/2 গুণ।
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