Question

Find the polar coordinates for the point (x,y) = (-sqrt(3),1) use Radians.

Answer 1

what is r?

Answer 2

-sqrt(3)?

Answer 3

Hey I remember you!

Answer 4

:)

Answer 5

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

Answer 6

what is theta?

Answer 7

I thought that r was x and theta was y?

Answer 8

Nah.

Answer 9

what's the point of that?

Answer 10

No idea I'm super konfused haha....

Answer 11

idk from this example 4,5pi/4 it's saying that x,y is 4cos(5pi/4),4sin(5pi/4)

Answer 12

The idea is that if we draw a line from the origin to the point x,y we can also think of it as having some length r and some angle with the x-axis, theta.

Answer 13

You understand that?

Answer 14

mhm.

Answer 15

sounds like arc length, or somethinh we used in physics....

Answer 16

so I guess in a sense we are doing it all backwards...