Question

How do you convert `(18,-7)` into polar coordinates?

Answer 1

Cartesinan: `(x,y)=18,-7) rarr` Polar: `(r,theta)=(19.31,-0.37)`
`theta` given rn *radians#

Explanation:

`"radius" = sqrt(18^2+(-7)^2) ~~19.31321` (using a calculator)

`theta = "arctan"(-7/18) ~~-0.37089` (again with teh calculator)