UI Post-UTME Mathematics 2016 Question 18

Question 18

Trigonometry

Cos m = sin(m + 22°), find m.

  1. A.68
  2. B.34
  3. C.44
  4. D.14
Show the answer and explanation

Answer: B (34)

Explanation

cos m = sin(90° − m), so m + 22 = 90 − m and m = 34°.