Answer:
I think it would be [tex]\frac{\sqrt{37}}{\sqrt{77} }[/tex]
Step-by-step explanation:
using the saying, "Soh Cah Toa" which means Sine is opposite over hypotenuse Cosine is adjacent over hypotenuse and Tangeant is opposite over adjacent and i am assuming that the angles E and F are 45 which means it is [tex]\frac{DF}{EF}[/tex]
