## anonymous 4 years ago Converting polar to cartesian

1. anonymous

$r^2+2r^2\cos \theta \sin \theta$ Steps please.

2. anonymous

$r = \sqrt{x^2+y^2}$ $\cos(\theta) = \frac{x}{r}$ $\sin(\theta) = \frac{y}{r}$

3. anonymous

Trying to replace values now.

4. anonymous

Still can't get it. It's actually what I tried to do many times. Except That instead of of going r = square root, etc. I plugged it in directly. I can't get seperate the 2xy at the end. I can t isolate the y since the answer is x+y = plus or minus 1.

5. anonymous

$x^2 + y^2 + 2xy = (x+y)^2$

6. anonymous

! Crap, I got stuck in a dumb place big time. Thanks.

7. anonymous

Happens sometimes, no worries.

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