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 + $\frac{\sqrt{2}}{2}$