SOLUTION: A closed circuit television camera is mounted on a wall 7.4 feet above a security desk in an office building. It is used to view an entrance door 9.3 feet from the desk. Find the a
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Question 829997: A closed circuit television camera is mounted on a wall 7.4 feet above a security desk in an office building. It is used to view an entrance door 9.3 feet from the desk. Find the angle of depression from the camera lens to the entrance door.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A closed circuit television camera is mounted on a wall 7.4 feet above a security desk in an office building. It is used to view an entrance door 9.3 feet from the desk. Find the angle of depression from the camera lens to the entrance door.
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Draw the picture:
You have a right triangle with height = 7.4 ft and base = 9.3
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Equation:
Let the angle of depression be "t".
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tan(t) = 9.3/7.4
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Ans: t = arctan(9.3/7.4) = 51.49 degrees
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Cheers,
Stan H.
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