4G l 10:22 O Vo) LT 78 ... epraghna.com/student, 4 Duration : 3:00:00 Time Left :...

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4G l 10:22 O Vo) LTÉ 78 ... epraghna.com/student, 4 Duration : 3:00:00 Time Left : 2:50:29 Question No .19 In a triangle ABC, if a, b, c are in A.P and 은 sin 2C + 등sin 2B + 응sin 2A+ % si а the value of sin B equals [Note : All symbols have usual meaning in a triangle] (A) 2 (B) - 1 (C) 1 (D) 2 Mark For Review & Next Clear Response Save & Next Submit MATHEMATICS 1 3 4 5 7 8 9 2. 4G l 10:22 O Vo) LTÉ 78 ... epraghna.com/student, 4 Duration : 3:00:00 Time Left : 2:50:29 Question No .19 In a triangle ABC, if a, b, c are in A.P and 은 sin 2C + 등sin 2B + 응sin 2A+ % si а the value of sin B equals [Note : All symbols have usual meaning in a triangle] (A) 2 (B) - 1 (C) 1 (D) 2 Mark For Review & Next Clear Response Save & Next Submit MATHEMATICS 1 3 4 5 7 8 9 2.