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θ সূক্ষ্মকোণ কোণ হলে-

i sin θ সর্বদা ধনাত্মক 

ii. cos θ সর্বদা ধনাত্মক 

ii. sinθ + cosθ>1 

নিচের কোনটি সঠিক?

Created: 1 year ago | Updated: 4 months ago
Updated: 4 months ago
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