Trigonometry - Jamb Mathematics Past Questions and Answers

Question 6:

• JAMB 2019

If \(\sin x = \frac{4}{5}\), find \(\frac{1 + \cot^2 x}{\csc^2 x - 1}\).

A. \(\frac{13}{2}\)
B. \(\frac{25}{9}\)
C. \(\frac{3}{13}\)
D. \(\frac{4}{11}\)

Question 7:

• JAMB 2018

From a point R, 300m north of P, a man walks eastwards to a place; Q which is 600m from P. Find the bearing of P from Q correct to the nearest degree

A. 026\(^o\)
B. 045\(^o\)
C. 210\(^o\)
D. 240\(^o\)

Question 8:

• JAMB 2018

Given that Sin (5\(_x\) − 28)\(^o\) = Cos(3\(_x\) − 50)\(^o\), O\(_x\) < 90\(^o\)
Find the value of x

A. 14\(^o\)
B. 21\(^o\)
C. 32\(^o\)
D. 39\(^o\)

Question 9:

• JAMB 2018

Tanθ is positive and Sinθ is negative. In which quadrant does θ lies

A. Second only
B. Third only
C. Fourth only
D. First and third only

Question 10:

• JAMB 2017

Evaluate (\(\sin\)45^o + \(\sin\)30^o ) in surd form

A. \(\frac{\sqrt{3}}{2\sqrt{2}}\)
B. \(\frac{1}{2}\)
C. \(\frac{1}{2}\)√2
D. 1 + \(\frac{\sqrt{2}}{2}\)