sir this is the important question from the book -ML aggarwal( avichal publication) class 10th , chapter20 , heights and distances
it is given that The horizontal distance between two towers is 140 m.
The angle of elevation of the top of the first tower when seen from the top of the second tower is 30.
If the height of the second tower is 60 m,
find the height of the first tower
question no 25 , heights and distances , ICSE board