Car A and Car B leave the origin at noon. Car A travels north at 66 mph and car B travels east at 112 mph.

(a) How far apart are they after 1 hour?

(b) How far apart are they after http://homework.math.ucsb.edu/webwor...5b59f2bc11.png hours?

(c) When are they 1300 miles apart?

I know (a) is 130 miles. But I can't seem to get b, and therefore i can't do c. If anyone can help I'd greatly appreciate it =)