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National Monuments In 1906, Teddy Roosevelt designated Devils Tower National Monument in northeast Wyoming as the first national monument in the United States. The tower rises 1280 feet above the valley of the Bell Fourche River.

a. If the shadow of the tower is 2100 feet long at a certain time, find the angle of elevation of the sun.

b. How long is the shadow when the angle of elevation of the sun is 38°?

c. If a person at the top of Devils Tower sees a hiker at an angle of depression of 65°, how far is the hiker from the base of Devils Tower?

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