Question

Which of the following pairs of coordinates do not represent the same point in polar coordinates?
Check all that apply

A. (r,theta) and (r, theta + 2pi)
B. (r,theta) and (-r,theta + pi)
C. (r,theta) and (-r, -theta)
D. (r,theta) and (-r, theta+ 2pi)

Answer 1

C and D are not the same coordinate

Answer 2

so is the answer b then

Answer 3

Nope, b is the same coordinate

Answer 4

so its A then? i am sorry i am confused on the problem

Answer 5

the question is asking whether the second coordinate is the same as the first coordinate.

C. (r,theta) and (-r, -theta) are two different coordinates
D. (r,theta) and (-r, theta+ 2pi) are two different coordinates,

so it's C and D