# Angles of Elevation and Depression, Short questions (Question 1 - 3)

Question 1:
Diagram below shows two vertical poles on a horizontal plane. J, K, L, M and N are five points on the poles such that KL = MN.
Name the angle of elevation of point J from point M.

Solution:

Angle of elevation of point J from point $M=\angle KMJ$

Question 2:
Diagram below shows two vertical poles JM and KL, on a horizontal plane.
The angle of depression of vertex K from vertex J is 42o.
Calculate the angle of elevation of vertex K from M.

Solution:
JN = 10 tan 42o = 9.004 m
NM = 25 – 9.004 = 15.996 m
KL = NM = 15.996 m

Question 3:
Diagram below shows a vertical pole KMN on a horizontal plane. The angle of elevation of M from L is 20o.
Calculate the height, in m, of the pole.

Solution: