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The angle of elevation from the top of an office building in New York City to...

The angle of elevation from the top of an office building in New York City to the top of the world trade center is 68°, while the angle of depression from the top of the office building to the bottom is 63°. The office building is 290 feet from the World Trade Center. Find the height of the World Trade Center.
Math   Precalculus   
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