Recall the identities:

R R R R

We want to write the following polar equation in rectangular coordinates:

.

Let us begin by reciprocating both sides of the equation

.

Multiplying both sides by 2 and r, we get: .

In other words: .

Plugging in the appropriate identities, we get:

.

NOw, let us square both sides:

.

And, again, let us plug in the appropriate identity:

.

simplifying, we find that: