22. In polar coordinates a two-dimensional vector is given by its radius and angle . Write a user-defined MATLAB function that adds two vectors that are given in polar coordinates. For the function name and arguments, use

[r th]= AddVecPol(r1,th1,r2,th2), where the input arguments are and

, and the output arguments are the radius and angle of the result. Use the function to carry out the following additions:

(a) ,

(b) ,