Waec Mathematics 1990 Past Questions and Answers

Question 36:

• WAEC 1990

In the diagram below, O is the center of the circle if ∠QOR = 290^o, find the size ∠QPR

A. 110^o
B. 70^o
C. 55^o
D. 35^o
E. 20^o

Question 37:

• WAEC 1990

In the diagram above, PQ is a tangent at T to the circle ABT. ABC is a straight line and TC bisects ∠BTO. Find x.

A. 20^o
B. 30^o
C. 35^o
D. 40^o
E. 50^o

Question 38:

• WAEC 1990

Which of the sketches above gives a correct method for constructed an angle of 120^o at the point P?

A. I only
B. II only
C. III only
D. I and II only
E. I, II and III

Question 39:

• WAEC 1990

Use mathematical table to evaluate (cos40° - sin30°)

A. -0.2660
B. -0.0266
C. 0.0266
D. 0.2660
E. 1.5320

Question 40:

• WAEC 1990

Use mathematical table to evaluate (cos40° - sin30°)

A. -0.2660
B. -0.0266
C. 0.0266
D. 0.2660
E. 1.5320