The incircle of AABC touches BC at D. The difference between BD and CD (R is...

 

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The incircle of AABC touches BC at D. The difference between BD and CD (R is circumradius) is (A) 4R sin sin ",| BC 2. (B) 4R cos 4sin | B-C COS (C) 6 – c| b-e (D) 2 The incircle of AABC touches BC at D. The difference between BD and CD (R is circumradius) is (A) 4R sin sin ",| BC 2. (B) 4R cos 4sin | B-C COS (C) 6 – c| b-e (D) 2