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Un article trouvé pour ce sujet.
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Trigonometry and picture hanging |
2010-01-13 |
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george pose la question :
The top of a picture 1m high 0.8m from the ceiling. At a point on the ceiling directly in front of the picture, we wish to install a light so that the angle subtended by the picture equals to the angle of depression of the top of the picture. How far out from the wall should the light be installed?
Penny Nom lui répond. |
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