Waec Mathematics 2010 Past Questions and Answers

Question 16:

• WAEC 2010

Simplify 2\(\sqrt{3}\) - \(\frac{6}{\sqrt{3}} + \frac{3}{\sqrt{27}}\)

A. 1
B. \(\frac{1}{3}\sqrt{3}\)
C. 2\(\sqrt{3} - 5\frac{2}{3}\)
D. 6\(\sqrt{3}\) - 17

Question 17:

• WAEC 2010

If sin 3y = cos 2y and 0^o \(\leq\) 90^o, find the value of y

A. 18^o
B. 36^o
C. 54^o
D. 90^o

Question 18:

• WAEC 2010

A rectangle has length xcm and width (x - 1)cm. If the perimeter is 16cm. Find the value of x

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

Question 19:

• WAEC 2010

Given that tan x = 1, where 0^o \(\geq\) x 90^o, evaluate \(\frac{1 - \sin^2 x}{\cos x}\)

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

Question 20:

• WAEC 2010

What is the length of a rectangular garden whose perimeter is 32cm and area 39cm²?

A. 25cm
B. 18cm
C. 13cm
D. 9cm