Question

How do you convert `( -2x , -2y )` into polar coordinates?

Answer 1

For `r`:
`r^2=x^2+y^2`

`r^2=(-2x)^2+(-2y)^2`

`r^2=4x^2+4y^2`

`r=2sqrt(x^2+y^2)`

For `theta`:
`theta=tan^(-1)(y/x)`

`theta=tan^-1 ((cancel(-2)y)/(cancel(-2)x))`

`theta=tan^-1 (y/x)`