Waec Mathematics 2012 Past Questions and Answers

Question 46:

• WAEC 2012

The diagram is a circle with centre P. PRST are points on the circle. Find the value of < PRS

A. 144^o
B. 72^o
C. 40^o
D. 36^o

Question 47:

• WAEC 2012

The diagram is a circle of radius |QR| = 4cm. \(\bar{R}\) is a tangent to the circle at R. If TPO = 120^o, find |PQ|.

A. 2.32cm
B. 1.84cm
C. 0.62cm
D. 0.26cm

Question 48:

• WAEC 2012

In the diagram, |SR| = |QR|. < SRP = 65^o and < RPQ = 48^o, find < PRQ

A. 65^o
B. 45^o
C. 25^o
D. 19^o

Question 49:

• WAEC 2012

The graph is that of y = 2x² - 5x - 3. For what value of x will y be negative? For what value of x will y be negative?

A. -\(\frac{1}{2} \leq x\) < 3
B. -\(\frac{1}{2} < x \leq 3\)
C. -\(\frac{1}{2} < x < 3\)
D. -\(\frac{1}{2} \leq x \leq 3\)

Question 50:

• WAEC 2012

The diagram is a polygon. Find the largest of its interior angles

A. 300^o
B. 100^o
C. 120^o
D. 150^o