Question

The rectangular coordinates of a point are given. Plot the point and find two sets of polar coordinates for the point for 0 ≤ theta < 2pi. (-3,-3)

Answer 1

I got (-3sqrt2,.785) and (-3sqrt2, 3.927)

Answer 2

@jim_thompson5910

Answer 3

can you tell me if my answers are right?^^

Answer 4

The first one has the correct r and theta value, but the second one has an incorrect 'r' value.

Answer 5

Okay, what would the r value be?..

Answer 6

So the second one is ( ??? , 3.927)

Answer 7

wait duh it should be positive

Answer 8

yes

Answer 9

you got it

Answer 10

yay! ok would the rect. coords of (2,0) be (2,0) and (-2,pi)

Answer 11

@jim_thompson5910

Answer 12

I mean th polar coords

Answer 13

yes you are absolutely correct, nice job

Answer 14

oh and I almost forgot, but in the last one, it's probably best to leave things in terms of pi

Answer 15

didn't i?

Answer 16

θ =arctan(-3/-3)=pi/4 or 5pi/4
r=3sqrt(2)
1- (3sqrt(2),pi/4)
2- (3sqrt(2),5pi/4)

Answer 17

so in instead of 0.785, you would write pi/4

Answer 18

Oh ok.. what about the other one

Answer 19

and 3.927 would be 5pi/4

Answer 20

thx!!

Answer 21

sure thing