Question

from a point on the ground the angle of elevation of the bottom and top of Transmission are fixed at the top of 20 m high building are 45 and 60 degree respectively find the height of the tower

Answer 1

refer to the attachment

Answer 2

Answer:

Step-by-step explanation height of building is 20m . Let height of tower be x and distance between building and the point on the ground be y.

As angle of elevation of top of transmission tower is 60

Therefore 20+x/b=under root 3

20+x=root3×b

20+x/root3=b

As angle of elevation of bottom of tower is 45

Therefore 20/b=1

b =20

20= 20+x/root3

20root 3-20=x

Therefore x = 20(root 3 -1) m