Question

from a point on the ground, the angle of elevation of the bottom and the top of a transmission tower fixed at the top of a 20m high building are 45°and60° respectively. find the height of the tower​

Answer 1

Answer:

in case of angle of botton=45degree

tan45=height/base

1=20/base

base=20m

now in case of angle of elevation of top=60degree

tan60=height/base

√3=h+20/20

20√3=h+20

h=20√3-20

h=20(√3-1)

h=20x0.732

h=14.64m