Jamb Mathematics 2022 Past Questions and Answers

Question 16:

• JAMB 2022

If sinθ = - \(\frac{3}{5}\) andθ lies in the third quadrant, find cosθ

A. \(\frac{4}{5}\)
B. - \(\frac{5}{4}\)
C. \(\frac{5}{4}\)
D. - \(\frac{4}{5}\)

Question 17:

• JAMB 2022

Simplify \(\frac{1}{3-√2}\) in the form of p + q√2

A. \(\frac{7}{3}\) - \(\frac{1}{7√2}\)
B. \(\frac{7}{3}\) + \(\frac{1}{7√2}\)
C. \(\frac{3}{7}\) - \(\frac{1}{7√2}\)
D. \(\frac{3}{7}\) + \(\frac{√2}{7}\)

Question 18:

• JAMB 2022

Find the length of a chord 3cm from the centre of a circle of radius 5cm

A. 8cm
B. 5.6cm
C. 7cm
D. 6.5cm

Question 19:

• JAMB 2022

Mr Adu spends his annual salary on food(f), rent(r), car maintenance, gifts(g), savings(s) and some miscellaneous (m) as indicate in the table below:

F	R	C	G	S	M
28%	15%	20%	14%	10%	13%

If the above information is represented on a pie chart. What angle represents his spending on food?

A. 108.5
B. 100.8
C. 98.8
D. 120.5
E. 120.5

Question 20:

• JAMB 2022

A rectangular pyramid has an area 24cm\(^2\) and height 7.5cm. Find its volume?

A. 65.0cm\(^3\)
B. 70.5cm\(^3\)
C. 56.5cm\(^3\)
D. 60.0cm\(^3\)