JAMB Mathematics 2017 Objective — Question 12

Question 12 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2017 Objective paper, with the correct answer and a full explanation.

Given that θ is an acute angle and tanθ = 12/5, find sinθ.

A. A. 12/13Correct
B. B. 5/12
C. C. 5/13
D. D. 5/13

Explanation

With opposite=12, adjacent=5, hypotenuse=13 (Pythagoras), sinθ = opposite/hypotenuse = 12/13.

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