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Railways PYQCBT 1 2016

RRB NTPC · Question 78

If Sin D = 3/5, then (sin D + cos D)^2 =? A. 1 B. 24/25 C. 49/25 D. 12/25

  1. A

  2. B

  3. D

  4. C

Show answer & explanation

Answer: (D) C

Explanation

sin D = 3/5 gives cos D = 4/5. (sin D + cos D)² = (7/5)² = 49/25.