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Assessment

A ladder is leaning against a wall. If the angle between the ground and the ladder is 60 degrees and the length of the ladder is 10 feet, how high up the wall does the ladder reach?

A person is standing 50 meters from the base of a building and looks up at an angle of elevation of 45 degrees. How tall is the building?

If the angle of elevation to the top of a hill from a point 100 meters away is 30 degrees, what is the height of the hill?