Find the distance between (-3, 3) and (-3, -3).

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)