Absolutely lost on this:

r=8cotx (x should be in degrees).

I tried converting this (as well as others) but I seem to just get nowhere after I turned cot into cosx/sinx.

Thanks.

Edit: The equation above should be converted to rectangular form.

Printable View

- Mar 17th 2009, 10:49 PMCheaglesConverting polar coordinates.
Absolutely lost on this:

r=8cotx (x should be in degrees).

I tried converting this (as well as others) but I seem to just get nowhere after I turned cot into cosx/sinx.

Thanks.

Edit: The equation above should be converted to rectangular form. - Mar 18th 2009, 01:16 AMmr fantastic
- Mar 18th 2009, 05:57 AMHallsofIvy
I think I would have done this a slightly different way:

so

Multiplying on both sides of the equation by r,

and

Now squaring both sides will give what Mr. fantastic got.