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Un article trouvé pour ce sujet.
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A flagpole and a telescope |
2007-06-04 |
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Fabiola pose la question :
A telescope is mounted on a tripod 5 ft above the ground and 20 ft from a
flagpole. The telescope must be rotated 48° from horizontal to see the top
of the flagpole. How tall is the flagpole?
Stephen La Rocque lui répond. |
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