Mathematics
From a window A, 10 m above the ground the angle of elevation of the top C of a tower is x°, where tan x° = and the angle of depression of the foot D of the tower is y°, where tan y° = . Calculate the height CD of the tower in metres.
Related Questions
A vertical tower is 20 m high. A man standing at some distance from the tower knows that the cosine of the angle of elevation of the top of the tower is 0.53. How far is he standing from the foot of the tower ?
A vertical pole and a vertical tower are on the same level ground in such a way that from the top of the pole the angle of elevation of the top of the tower is 60° and the angle of depression of the bottom of the tower is 30°. Find :
(i) the height of the tower, if the height of the pole is 20 m;
(ii) the height of the pole, if the height of the tower is 75 m