Solve Applied Problems Using the Law of Cosines
-Two Points $A$

Multiple Choice

Solve Applied Problems Using the Law of Cosines
-Two points $A$ and $B$ are on opposite sides of a building. A surveyor selects a third point $C$ to place a transit. Point $\mathrm { C }$ is 54 feet from point $\mathrm { A }$ and 72 feet from point $B$ . The angle $A C B$ is $60 ^ { \circ }$ . How far apart are points $A$ and $B$ ?

A) $64.9$ feet
B) $109.5$ feet
C) $78.5$ feet
D) $100.2$ feet