12/5
Step-by-step explanation:
Tan D = opp/adj = EF/DE = 12/5
Review:___________________
tan=opposite/adjacent
_________________________
since DEF is a right triangle at point E
then
tan(∠EDF) = EF/ED
= 12/5
step-by-step explanation:
so the rectangle is 80cm (area)
now to find the area of a triangle.
base times height.
4 times 8.
your answer is 96cm.
hope this .