Mathematics Past Questions

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721

The value of sin 210° is

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

View Answer & Discuss (1) WAEC 1992

722

Town P is on bearing 315^o from town Q while town R is south of town P and west of town Q. lf town R is 60km away from Q, how far is R from P?

A. 30km
B. 42km
C. 45km
D. 60km
E. 120km

View Answer & Discuss (3) WAEC 1992

723

A ladder leans against a vertical wall at an angle
60° to the wall, if the foot of the ladder is 5 metres
away from the wall, calculate the length of the
ladder.

A. \(\frac{5\sqrt3}{3}\)m
B. 5m
C. \(\frac{10\sqrt3}{3}\)m
D. 5√3m
E. 10m

View Answer & Discuss (3) WAEC 1992

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724

A cliff on the bank of a river is 300 metres
high. if the angle of depression of a point on the
opposite side of the river is 60° find the width of
the river.

A. 100m
B. 75√3m
C. 100√3m
D. 200√3m
E. 300m

View Answer & Discuss (1) WAEC 1992

725

Points X and Y are respectively 12m North and 5m east of point Z. Calculate XY

A. 7m
B. 12m
C. 13m
D. 17m
E. 18m

View Answer & Discuss (2) WAEC 1992

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