which set of rectangular coordinates describes the same location as the polar coordinates (3sqrt2, 3pi/4) ?
Choices are A. (-3,-3)
B. (-3,3)
C. (3,-3)
D. (-3sqrt2, 3sqrt2)

Question

which set of rectangular coordinates describes the same location as the polar coordinates (3sqrt2, 3pi/4) ?
     Choices are A. (-3,-3)
                        B. (-3,3)
                        C. (3,-3)
                        D. (-3sqrt2, 3sqrt2)

anonymous · Answer

X=r cos 
Y=r sin

anonymous · Answer

just apply the formula given by @DemolisionWolf... you already have the radius r and the angle $\theta$...

anonymous · Answer

... to solve the x and y coordinates...

anonymous · Answer

so the location of the point is written as (r,theta) ?
does theta stay the same in the new point that i'm looking for ? or am i finding something totally different ?

anonymous · Answer

they are just the same point... |dw:1405359290397:dw|