WAEC Further Mathematics 2013 Question 2

Question 2

Trigonometry

Solve Sin θ = tan θ.

  1. A.200°
  2. B.90°
  3. C.60°
  4. D.0°
Show the answer and explanation

Answer: D (0°)

Explanation

sin θ = sin θ/cos θ gives sin θ = 0 or cos θ = 1. Of the options only θ = 0° works.