Question

Tthe angle of elevation of point P from point Q is 400. PQ=45km.How high is point P above the level of point Q ?

Answer 1

Answer:

The angle of elevation of to be top point

of the vertical tower PQ of height

from poin A is

and from a point B, the angle of elevation is

where B is point at a distance

from the point A measured along the line

which makes an angle

with AQ. Prove that