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OpenStudy (anonymous):
Two men, 400 feet apart, observe a balloon between them that is in the same vertical plane with the men. The respective angles of elevation of the balloon are observed by the men to be 75degrees20' and 49degrees30'. I know I start with something like.. sin75degrees20'/x = sin56degrees10'/400 (400)(sin75degrees20')=(x)(sin56degrees10') I just don't know how to find out what sin75degrees20' equals. How do you put that into a calculator?
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