passwella.
Menu

WAEC Mathematics 1993 Question 31

Question 31

Trigonometry

Given that tan x = 5/12, what is the value of sin x + cos x?

  1. A.5/13
  2. B.7/13
  3. C.12/13
  4. D.17/13
  5. E.5/12
Show the answer and explanation

Answer: D (17/13)

Explanation

Opposite 5, adjacent 12, hypotenuse 13: sin x = 5/13 and cos x = 12/13, so the sum is 17/13.