Question

Convert polar coordinates (8, 5pi/4) to rectangular coordinates.

Answer 1

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

Answer 2

@satellite73

Answer 3

HI!!

Answer 4

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

Answer 5

oou

Answer 6

Give me a moment to calculate that :)

Answer 7

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

Answer 8

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

Answer 9

wait..no
-4 sqroot2