Math Chapter Wise Trigonometrical Identities And Circular Function English MCQ TGT 2010 Q.In a triangle ABC, a = 4, b = 3, ∠ ∠ ∠A = 60°. Then c is root of the equation Ac2 – 3c–7 = 0 Bc2 + 3c+7 = 0 Cc2 – 3c+7 = 0 Dc2 + 3c–7 = 0 Show answer Correct answer: c2 – 3c–7 = 0