Question

Two straight roads intersect at right angles. Two men, A and B, are 100 km from the intersection, one on each road. They drive towards the intersection at 30km^-1 and 40 khmh^-1 respectively. Find the distance of each driver from the intersection as a function of t, the time in hours for which they are driving. Hence find their distance apart, d(t), at any time. For what value of t is the distance apart least?

Answer 1

ah you posted it again

Answer 2

Yup, i was staring it for hours i didn't even know how to do it -_-

Answer 3

I tried working backwards but it didn't work. Or using the pythagorus theorem *sigh*

Answer 4

that looks soo scary.

Answer 5

LOL, I know its killing me =/