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Using Trigonometry Exercises 4 A rescue helicopter spots a missing surfer drifting out to sea on his damaged board. The helicopter descends vertically to a height of 19 m above sea level and drops down an emergency rope, which the surfer grips. Due to the wind the rope swings at an angle of 27 to the vertical, as shown in the diagram. What is the length of the rope? 5 While on a bushwalk Michelle looks up through an angle of 55 and sees her friend Helen (H) on top of the cliff at the lookout point. How high is the cliff if Michelle is 200 m from its base? (Assume both girls are the same height.)
