# Rectangle to Polar Form

1. Nov 14, 2004

### iggybaseball

How would I change: 2x+3y=4
into polar form? I understand how to solve for polar form but the 4 without a variable is confusing me.

2. Nov 14, 2004

### Phymath

$$2 r cos \theta + 3 r sin \theta = 4$$
$$r(2 cos \theta + 3 sin \theta) = 4$$
$$2 cos \theta + 3 sin \theta = 4/r$$
$$\frac{4}{2 cos \theta + 3 sin \theta} = r$$

whats wrong with that?

3. Nov 14, 2004

### iggybaseball

Thank you I feel ashamed that such a simple problem stumped me. I was thinking to hard lol. Thanks again