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From the side of a hill, Wayne looks up the top of a nearby vertical cliff at an angle of elevation of 36°, and looks down the bottom of the cliff at an angle of depression of 47°. Wayne and the cliff are 490 m apart. What is the height of the cliff to the nearest metre?
Hints: Look at the diagram provided below.
Tips: To determine the height of the cliff, find the lengths of BC and CD.
In both triangles, the length of AC is 490 m.
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