Waec Mathematics Past Questions and Answers

Question 566:

• WAEC 1998

In ∆PQR. ∠PQR is a right angle. |QR| = 2cm and ∠PRQ = 60^o. Find |PR|

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

Question 567:

• WAEC 1998

In the diagram, PQ||SR. Find the value of Z

A. 30^o
B. 40^o
C. 45^o
D. 90^o
E. 120^o

Question 568:

• WAEC 1998

In \(sin(X+30)^o=cos40^o\),find X

A. 10^o
B. 20^o
C. 50^o
D. 60^o
E. 90^o

Question 569:

• WAEC 1998

Find the value of X if \(cos x = \frac{5}{8}\) for \(0^o\le X\le 180^o\)

A. 141.3^o
B. 128.7^o
C. 51.3^o
D. 48.7^o
E. 38.7^o

Question 570:

• WAEC 1998

A ladder 5cm long long rest against a wall such that its foot makes an angle 30^o with the horizontal. How far is the foot of the ladder from the wall?

A. \(\frac{5\sqrt{2}}{3}m\)
B. \(2\frac{1}{2}m\)
C. \(\frac{5\sqrt{3}}{2}m\)
D. \(\frac{10\sqrt{3}}{3}m\)
E. \(10\sqrt{3}m\)