math
posted by Anonymous .
Helicopter A is flying due north toward a landing point 10 miles away. Helicopter B is 11 miles due east of helicopter A. About how far is helicopter B from the landing point?

A (instantaneously), B and the landing point (of A) are the vertices of a right triangle.
The distance between B and the landing point is:
sqrt[(10)^2 + (11)^2] = 14.87 miles