4 years ago

In △DEF, DE = 5 and m∠F=55. Find FE.

Mathematics

2 answers:

Marizza181 [45]4 years ago

7 0

Check the picture below.

make sure your calculator is in Degree mode.

Elden [556K]4 years ago

3 0

SOH CAH TOA

tan(55°) = 5/(FE)
FE = 5/tan(55°)
FE = 3.5

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