n Δ DEF​, DE = 5 and m<D=55 Find FE to the nearest tenth

Mathematics
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in Δ DEF, DE = 5 and m<D=55 Find FE to the nearest tenth.

https://tcan4424-oakcliff-ccl.gradpoint.com/Resour...

a.8.9

b.7.1

c.4.8

d.1.4

Apr 30th, 2015

we have  tan(D^)= FE/DE  so : FE = DE * tan(D^)

so :  FE = 5 * tan(55°) = 7.14 

so is  b.7.1 the solution 

Good luck 

and please if you need something else call me first i will give you the best answer 

Apr 30th, 2015

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