JAMB Mathematics 2013 Question 34

Question 34

Trigonometry

If tan θ = 3/4, find the value of sin θ + cos θ.

  1. A.1⅓
  2. B.1⅔
  3. C.1⅗
  4. D.1⅖
Show the answer and explanation

Answer: D (1⅖)

Explanation

A 3-4-5 triangle gives sin θ = 3/5 and cos θ = 4/5, so the sum is 7/5 = 1⅖.