Therefore, the width of the river is m . EXERCISE . . A circus artist is climbing a m long rope, which is tightly stretched and tied from the top of a vertical pole to the ground.
Find the height of the pole, if the angle made by the rope with the ground level is ° (see Fig. . ). .
A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle ° with it. The distance between the foot of the tree to the point where the top touches the ground is m. Find the height of the tree. .
A contractor plans to install two slides for the children to play in a park. For the children below the age of years, she prefers to have a slide whose top is at a height of . m, and is inclined at an angle of ° to the ground, whereas for elder children, she wants to have a steep slide at a height of 3m, and inclined at an angle of ° to the ground. What should be the length of the slide in each case?
. The angle of elevation of the top of a tower from a point on the ground, which is m away from the foot of the tower, is °. Find the height of the tower. .
A kite is flying at a height of m above the ground. The string attached to the kite is temporarily tied to a point on the ground. The inclination of the string with the ground is °. Find the length of the string, assuming that there is no slack in the string.
. A . m tall boy is standing at some distance from a m tall building. The angle of elevation from his eyes to the top of the building increases from ° to ° as he walks towards the building.
Find the distance he walked towards the building. . From a point on the