the angle of elevation to the tower is 30 degree and then moved towards the tower of a distance 20m.now thw angle of elevation is 60 degree.What is the height of the tower??plz help me:)

Answer 1

Assume you start a distance x from the tower of height y.

y = x tan(30°)
y = (x-20) tan(60°)

Solve for y.

Answer 2

4.9m