SOLUTION: In ∆DEF, ∠D is a right angle and m∠F = 30. How long is DF if FE + DE = 12.

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Question 1185236: In ∆DEF, ∠D is a right angle and m∠F = 30. How
long is DF if FE + DE = 12.
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
Since ∆DEF is a 30-6-90 right triangle







Substitute 2DE for FE





Since ∆DEF is a 30-6-90 right triangle







Edwin
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