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OpenStudy (anonymous):
A plane is sighted by two observers 1 km apart at angles of 74 and 78 degrees. How high is the plane?
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jimthompson5910 (jim_thompson5910):
first draw out the picture |dw:1363746823275:dw|
jimthompson5910 (jim_thompson5910):
we want to find this length here |dw:1363746942466:dw| call it h
jimthompson5910 (jim_thompson5910):
if this length was x |dw:1363746977471:dw|
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