Babynini one year ago Convert polar coordinates (8, 5pi/4) to rectangular coordinates.

1. Babynini

I know r^2 = sqroot (x^2+y^2) but not sure how to do that with this one..

2. Babynini

@satellite73

3. misty1212

HI!!

4. misty1212

you do not have a curve, just a point use $x=r\cos(\theta), y = r\sin(\theta)$

5. Babynini

oou

6. Babynini

Give me a moment to calculate that :)

7. Babynini

so they both equal $-\frac{ 8\sqrt{2} }{ 2 }$

8. Babynini

which can be simplified to $-\frac{ 4\sqrt{2} }{ 2 }$ right?

9. Babynini

wait..no -4 sqroot2