In ΔDEF, DE = 9 cm, EF = 12 cm and DF = 7 cm. If DO is the angle bisector of ∠EDF meets EF at O, then find the length of OF.
1
5.25 cm
2
4.35 cm
3
4.00 cm
4
4.25 cm
In ΔDEF, DE = 9 cm, EF = 12 cm and DF = 7 cm. If DO is the angle bisector of ∠EDF meets EF at O, then find the length of OF.