Posted by **hmmmm** on Monday, September 25, 2006 at 7:21pm.

change equations to polar form:

1) y= -1

2) x^2 + y^2 = 4

how would i do these questions? thank u

to convert to polar, you use the relationship: x = rcos(theta), and

y = rsin(theta)

1) rsin(theta) = -1,

r = 1-/sin(theta)

2)try this yourself by substituting as in part 1.

but what is theta though? i dunno the angle

don't need to know the angle. Rememeber, it's an equation of a line. As theta varies, r varies. (just like as x varies, y varies).

## Answer This Question

## Related Questions

- Calculus - I wanted to confirm that I solved these problems correctly (we had to...
- Advanced Math - Identify the polar form of the linear equation 4x+3y=10. x=rcos(...
- Calculus 2 - Write in cartesian form: r=3tan(theta)sec(theta) im working with ...
- Pre-Calculus - translate this polar equation into a rectangular form: rsin(...
- Math - Rewrite the given equation using the substitutions x=rcos(theta) and y=...
- trig - express 20sin theta + 4 cos theta as R sin(theta + alpha) R sin(theta + ...
- math - put these polar equations into cartesians form: 1) theta=135 degrees 2)...
- PRECALCULUS HELP PLEASE! - convert the polar equation to rectangular form. 1.) ...
- PRECALCULUS - convert the polar equation to rectangular form. 1.) r sec(theta...
- MATH - I have a test in about an hour and a half and am having some difficulty ...

More Related Questions