# Thread: finding length of shape

1. ## finding length of shape

Find the lengths of BF and CF?

2. Originally Posted by zak_killcity14@hotmail.co

Find the lengths of BF and CF?
Use Law of Cosines "c^2 = a^2 + b^2 - 2*a*b*cos(C)"; in this case, your "C" is "BF" and angle c is 52 degrees. From there you can use the new information to find CF.