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Δ ABC এর ক্ষেত্রে-

i. AB2=AC2+BC2+2BD.BC

ii. AB2=AC2+BC2-2BC.DC

iii. ∠C=60° হলে, AB2=AC2+BC2-AC.BC

নিচের কোনটি সঠিক?

Created: 5 months ago | Updated: 5 months ago
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