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January 30, 2015

January 30, 2015

Posted by **Anonymous** on Tuesday, October 1, 2013 at 11:27am.

At what rate is the distance between the planes decreasing when Plane A is 5 nautical miles from the intersection point and Plane B is 5 nautical miles from the intersection point?

- Calc -
**bobpursley**, Tuesday, October 1, 2013 at 11:35amdistanceapart^2=distaneAfromcollision^2+distanceBfromcollision^2

Take the derivative..

s ds/dt=2xdx/dt + 2y dy/dt where x, y are the distances from the intersection point, and s is sqrt(x^2+y^2)

you are given dx/dt, dy/dt, solve for ds/dt

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