Answer:
FE=7.1 units
Step-by-step explanation:
we know that
In the right triangle DEF
The tangent of angle of 55 degrees is equal to divide the opposite side to the angle of 55 degrees (FE) by the adjacent side to angle of 55 degrees (DE)
so
tan(55°)=FE/DE
FE=(DE)tan(55°)
substitute the given value
FE=(5)tan(55°)
FE=7.1 units
