Math Chapter Wise Properties Of Triangle And Circular Inverse Function English MCQ PGT 2002 Q.1 1 sin cot costan x − − is equal to: A2 x 1 x 2 − + B2 x 2 x 1 − + C2 x 1 x 2 + DNone of these Show answer Correct answer: 2 x 1 x 2 +