Jamb Mathematics 1985 Past Questions and Answers

Question 31:

• JAMB 1985

The bearing of a bird on a tree from a hunter on the ground is N72oE. What is the bearing of the hunter from the birds?

A. S 18^o W
B. S 72^o W
C. S 72^o E
D. S 27^o E
E. S 27^o W

Question 32:

• JAMB 1985

Without using table, calculate the value of 1 + sec2 30o

A. 2\(\frac{1}{3}\)
B. \(\frac{2}{15}\)
C. \(\frac{5}{3}\)
D. 3\(\frac{1}{2}\)

Question 33:

• JAMB 1985

What is the probability that a number chosen at random from the intergers between 1 and 10 inclusive is either a prime or a multiple of 3?

A. \(\frac{7}{10}\)
B. \(\frac{3}{5}\)
C. \(\frac{4}{5}\)
D. \(\frac{3}{10}\)

Question 34:

• JAMB 1985

Find the area of a regular hexagon inscribed in a circle of radius 8cm

A. 16\(\sqrt{3}\) cm³
B. 96\(\sqrt{3}\) cm³
C. 192\(\sqrt{3}\) cm³
D. 16\(\sqrt{3}\) cm²
E. 33cm²

Question 35:

• JAMB 1985

If cos \(\theta\) = \(\frac{\sqrt{3}}{2}\) and \(\theta\) is less than 90o. Calculate \(\frac{\cot(90 - \theta)}{sin^2\theta}\)

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