A helium-filled balloon is attached to a 120 m long string. The string is tied to a hook on the ground and it makes an angle of 30° with the ground, as shown below.
The figure shows a right angle triangle with a balloon at the tip of the triangle. The string attached to the balloon makes an angle of 30 degrees to the ground. The length of the string is 120 meters.
What is the height of the balloon from the ground?
