Respuesta :

kiwisinsabaugh

Answer:

The length of segment DF is 90.

Step-by-step explanation:

Step 1: Draw and label ΔDEF

Step 2: Use the Law of Cosine to find the length of segment DF

  • [tex]cos(60)=\frac{45}{x}[/tex]
  • [tex]x cos(60)=45[/tex]
  • [tex]x=\frac{45}{cos(60)}[/tex]
  • [tex]x=90[/tex]