Please help-cartesian coordinates problem

Please help by explaining the solutions to this problem:
Two points in a plane have polar coordinates (2.42 m, 26.0°) and (4.07 m, 117.0°).
Determine the x- Cartesian coordinate and y cartesian coordinate of first point and second point.
Determine the distance between points.

First point x= 2.42*cos26, y=2.42*sin26
(2.175,1.06)
Second point x=4.07*cos117,y=4.07*sin117
(-1.848,3.626)
D^2 = (3.626-1.06)^2+(-1.848-2.175)^2
D^2=22.77
D=4.77