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Unilorin Post-UTME Mathematics 2022 (Model questions) Question 12

Question 12

Trigonometry

Given that θ is an acute angle and tan θ = 12/5, find sin θ.

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

Answer: A (12/13)

Explanation

Opposite 12, adjacent 5, so hypotenuse = √(144 + 25) = 13. sin θ = 12/13.