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WAEC Mathematics 2020 Question 27

Question 27

Trigonometry

If tan y is positive and sin y is negative, in which quadrant would y lie?

  1. A.First and Third only
  2. B.First and Second only
  3. C.Third only
  4. D.Second only
Show the answer and explanation

Answer: C (Third only)

Explanation

sin is negative in the third and fourth quadrants, and tan is positive in the first and third. Both hold only in the third quadrant.