Question

How do you convert the Cartesian coordinates (0, -5) to polar coordinates?

Answer 1

`5 angle - 90^@`

Explanation:

Cartesian co-ordinates (x;y) ma be converted to polar co-ordinates `(r;theta)` as follows :
`r=x^2+y^2`
`theta=tan^(-1)(y/x)`
Plotting the point and then joining a line from the origin to the point is also useful since this line will have length r, and the angle the line makes with the x-axis will be `theta`

So in this case, r = 5 and `theta=-90^@`