Jamb Mathematics 2009 Past Questions and Answers

Question 31:

• JAMB 2009

What is the value of p if the gradient of the line joining (-1,p) and (p, 4) is 2

3

?

A. -2
B. -1
C. 1
D. 2

Question 32:

• JAMB 2009

What is the value of r if the distance between the point (4,2) and (1,r) is 3 units?

A. 1
B. 2
C. 3
D. 4

Question 33:

• JAMB 2009

If y = 3 cos 4x, dy/dx equals

A. 6 sin 8x
B. -24 sin 4x
C. 12 sin 4x
D. -12 sin 4x

Question 34:

• JAMB 2009

Find the value of sin 45^o - cos 30^o

A. \(\frac{2+\sqrt{3}}{4}\)
B. \(\frac{\sqrt{2}+\sqrt{3}}{4}\)
C. \(\frac{\sqrt{2}+\sqrt{3}}{2}\)
D. \(\frac{\sqrt{2}-\sqrt{3}}{2}\)

Question 35:

• JAMB 2009

A cliff on the bank of a river is 300 meter high. if the angle of depression of a point on the opposite side of the river is 60^o, find the width of the river.

A. 100m
B. 75√3 m
C. 100√3m
D. 200√3m