A tower stands vertically on the ground. From a point on the ground, which is 15 m away from the foot to the tower, the angle to elevation to the top to the tower is found to be 60°. Find the height to the tower in meter.

The tops of two poles of height 22 m and 31 m are connected by a wire. If the wire makes an angle of 60° with the horizontal, then the length of the wire (in m) is:

If a wooden block is placed against a 15 meter tree such that it just reaches the top of the tree, with the angle of elevation of the tree is 30°, then find the length of the wooden block?

In a $\Delta ABC$ right angled at A, if $\angle ABC = 60^\circ$ and AC = 4 units, then length of BC (in units) is :

The tops of two poles of height 25 m and 16 m are connected by a wire. If the wire makes an angle 30° with the vertical, then the distance between the two poles is

At the foot of a mountain, the elevation of the summit is 45°. After ascending 2 kilometers towards the mountain, at an incline of 30°, the elevation changes to 60°. Determine the height of the mountain?

The cliff of a mountain is 180 m high, and the angles of depression of two ships on the same side of cliff are 30° and 60°. Find the distance between the two ships in meter.