Sunday
March 1, 2015

Homework Help: trigonometry

Posted by Michael on Sunday, March 21, 2010 at 11:11pm.

A lighthouse BC of unknown height stands on the edge of a cliff AB. From a point O, 2500 ft from the base of the cliff, an observer measures the angles of elevation of the top and bottom of the lighthouse and finds them to be 1540' and 1213'. How high is the lighthouse.

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