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Railways PYQCBT 2 2017

RRB NTPC · Question 55

If \(\sin x = \frac{4}{5}\), then \(Cosecx + \cot x = \)

  1. 31/12

  2. 35/12

  3. 2

  4. 1/2

Show answer & explanation

Answer: (C) 2

Explanation

With sin x = 4/5, cos x = 3/5 (first quadrant). Then cosec x = 5/4 and cot x = cos x / sin x = 3/4. Their sum = 8/4 = 2.