Question

How do you find the rectangular coordinate of `(2, pi/5)`?

Answer 1

`color(purple)(x ~~ 1.618, y ~~ 1.176`

Explanation:

`(r, theta) = (2, (pi/5))`

`x = r cos theta = 2 * cos (pi/5) ~~ 1.618`

`y = r sin theta = 2 * sin (pi/5) ~~ 1.176`