We have the next coordiantes (-2.3,-4.1)
First we need to calculate the resultant
[tex]r=\sqrt{(-2.3)^2+(-4.1)^2}[/tex][tex]r=4.7[/tex]Then we calculate the angle
[tex]\theta=tan(\frac{-4.1}{-2.3})^{-1}=-119.3[/tex]Therefore the polar coordinate is
[tex]4.7\angle-119.3[/tex]
