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Mathematics 15 Online
OpenStudy (anonymous):

In DEF, FE= 3, and M

OpenStudy (ivettef365):

you can use tan(37) = DE/3 so to get answer multiply 3 x tan(37)

OpenStudy (anonymous):

Tanx=opp.side/adjacent side --->tan 37=DE/FE --->tan 37*3=DE

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