1.

In ΔABC,a,b and c are the lengths of the sides opposite to the angles A,B and C respectively. The bisector of the ∠A meets the side BC at D and the circumscribed circle at E. Then DE equals

Answer»

In ΔABC,a,b and c are the lengths of the sides opposite to the angles A,B and C respectively. The bisector of the A meets the side BC at D and the circumscribed circle at E. Then DE equals



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