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OpenStudy (anonymous):
A tower's observation deck is 400m above the ground. Erin is standing at one end and her father is standing on the ground 200m away from the base. (the building is 90 degrees) What is the angle of depression from erin to her father? A tower's observation deck is 400m above the ground. Erin is standing at one end and her father is standing on the ground 200m away from the base. (the building is 90 degrees) What is the angle of depression from erin to her father? @Mathematics
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OpenStudy (anonymous):
tanTheta = 400/200
OpenStudy (anonymous):
63 deg
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