Two Planes Take Off at the Same Time from an Airport

Multiple Choice

Two planes take off at the same time from an airport. The first plane is flying at 246 miles per hour on a course of 130.0°. The second plane is flying in the direction 165.0° at 359 miles per hour. Assuming there are no wind currents blowing, how far apart are they after 2 hours? Apply the rules regarding the use of significant digits after all computations are complete.

A) 423 miles
B) 421 miles
C) 427 miles
D) 431 miles
E) 429 miles