- Thread starter mr.burger
- Start date

The northbound truck is at P(0,60t)

They form a right triangle so the distance between them is

D = sqrt((45t)^2+60t)^2)

find dD/dt at t=2

The eastbound truck is at P(45(t-1),0)

The northbound truck is at P(0,60t)

Same problem

I assume you needed help with the equations, not the derivitives.