Question

How do you change the polar coordinate `(9, -pi/3)` into rectangular coordinates?

Answer 1

`(4.5,-7.79)`

Explanation:

To convert from polar coordinate to rectangular coordinate we use the formula `x=rcos theta, y=rsin theta`

Hence,

`x=9cos (-(pi)/3)=4.5`

`y=9 sin (-(pi)/3)~~-7.79`

So the point is approximately `(4.5,-7.79)`