The length of EF is 3.8. Option A
To determine the value of the side, we have to make use of the sine rule, this rule is represented as;
sin A/a = sin B/b
Such that;
- a and b are the lengths of the sides
- A and B are the measure of the angles
Now, substitute the values, we have;
sin 75/EF = sin 50/3
cross multiply the values, we get;
EF = 3sin 75/sin 50
find the values
EF = 3(0.96)/0.766
EF = 2.88/0.766
Divide the values
EF = 3. 8