Q1. The angle of elevation from a yacht to the top of a cliff is 18°. If the yacht is 1.7km from the base of the cliff, find how high the cliff is. Q2. The pilot of a rescue helicopter spots a swimmer in distress at an angle of depression of 12°. If the helicopter is at an altitude of 200m, how far away (horizontally) is the swimmer?
Q3. The shadow of a building is 30m long when the angle of elevation of the sun is 56°. Calculate the: (a) height of the building (b) length of shadow when the sun is at an angle of 32º.
Q4.Bert likes to watch yachts from the top of a 40m vertical cliff. He spots his favourite craft at an angle of depression of 11°. How far away from the base of the cliff is the yacht?
Q5. A surveyor measures the angle and the sloped distance from the bottom to the top of a hill as 39° and 250m respectively. How high is the hill?
Q6. A flag pole is held vertically by 2 wires, both 18m long. Each wire makes an angle of 62° with the horizontal. How high is the flag pole?​