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In a ΔABC, ∠A=120∘. The bisector of A cut BC at point D, such that length of BD is twice of CD. If AD=10 unit and BC=k√7 unit, then value of k is

Answer» In a ΔABC, ∠A=120∘. The bisector of A cut BC at point D, such that length of BD is twice of CD. If AD=10 unit and BC=k√7 unit, then value of k is


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