Trigonometry - Jamb Mathematics Past Questions and Answers

Question 86:

• JAMB 2012

A man stands on a tree 150 cm high and sees a boat at an angle of depression of 74°. Find the distance of the boat from the base of the tree.

A. 52 cm
B. 43 cm
C. 40 cm
D. 15 cm

Question 87:

• JAMB 2013

If \(\tan \theta = \frac{3}{4}\), find the value of \(\sin \theta + \cos \theta\).

A. \(1\frac{1}{3}\)
B. \(1\frac{2}{3}\)
C. \(1\frac{3}{5}\)
D. \(1\frac{2}{5}\)

Question 88:

• JAMB 2014

How many sides has a regular polygon whose interior angle is 135°?

A. 12
B. 10
C. 9
D. 8

Question 89:

• JAMB 2014

If \(\sin\theta = \frac{12}{13}\), find the value of \(1 + \cos\theta\)

A. \(\frac{25}{13}\)
B. \(\frac{18}{13}\)
C. \(\frac{8}{13}\)
D. \(\frac{5}{13}\)

Question 90:

• JAMB 2014

In the figure above, KL//NM, LN bisects < KNM. If angles KLN is 54^o and angle MKN is 35^o, calculate the size of angle KMN.

A. 91^o
B. 89^o
C. 37^o
D. 19^o