1991 - WAEC Mathematics Past Questions and Answers - page 3

Find the coordinates of point B

The first term a of an A.P is equal to twice the
common difference d. Find, in terms of d, the 5th
term of the A.P.

The common ratio of a G.P. is 2. If the 5th term is
greater than the 1st term by 45, find the 5th term,

Two towns, P and Q, are on (4^oN 40^oW) and (4^oN
20^oE) respectively. What is the distance between
them, along their line of latitude? (Give your
answer in teems of π and R, the radius of the earth).

the graph above is a sketch of

Given that sin $\theta$ = -0.9063, where O $\le$ $\theta$ $\le$ 270°, find $\theta$.

From the top of a cliff, the angle of depression of
a boat on the sea is 60^o, if the top of the cliff is
25m above the sea level, calculate the horizontal
distance from the bottom of the cliff to the boat.

The angle of elevation of the top of a tree 39m
away from a point on the ground is 30^o. Find the height of the tree

In the diagram above, ATR is a tangent at the point T to the circle center O, if ∠TOB = 145°, find ∠TAO

P={2, 1,3, 9, 1/2}; Q = {1,21/2,3, 7} and R = {5, 4, 21/2}. Find P∪Q∪R