The dunes of Western Sahara have the highest heights. Determine the height of one of them if it is known that the steepness

The dunes of Western Sahara have the highest heights. Determine the height of one of them if it is known that the steepness of its leeward slope is 30o, and its length is 200m.

BC = 200 m – the length of the dune
Angle АСВ = 30о
AB = BC × sin 30о = 200 × 0.5 = 100 m.
The leg, which lies opposite an angle of 30 °, is equal to half the hypotenuse.
Answer: The height of the dune is 100 m.

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