GEOMETRY AND TRIGONOMETRY - Jamb Mathematics Past Questions and Answers

Question 271:

• JAMB 1987

What is the circumference of latitude 0°S if R is the radius of the earth?

A. R cos\(\theta\)
B. 2\(\pi\) R cos \(\theta\)
C. R sin \(\theta\)
D. 2\(\pi\) R sin \(\theta\)

Question 272:

• JAMB 1987

The base of a pyramid is a square of side 8cm. If its vertex is directly above the centre, find the height, given that the edge is 4.3cm

A. 6cm
B. 5cm
C. 4cm
D. 3cm

Question 273:

• JAMB 1987

What is the locus of the mid-points of all chords of length 6cm within a circle of radius 5cm and with centre 0

A. A circle of radius 4 cm and with centre O
B. The perpendicular bisector of the chords
C. A straight line passing through centre O
D. A circle of radius 6 cm and with centre O

Question 274:

• JAMB 1987

Find the probability of selecting a figure which is a parallelogram from a square, a rectangle, a rhombus, a kite and a trapezium

A. \(\frac{3}{5}\)
B. \(\frac{2}{5}\)
C. \(\frac{4}{5}\)
D. \(\frac{1}{5}\)

Question 275:

• JAMB 1987

An (n - 2)² sided figure has n diagonals. Find the number n diagonals for a 25-sided figure

A. 7
B. 8
C. 9
D. 10