precalculus polar coordinate day 2 4/13

polar coordinate day 2 4/13
convert rectangular to polar

Using these equations

Try to get r or r^2 by itself

polar equations look like this

r=4

Solve this

So next thing you do is factor

Then divide both sides by the equation in parenthesesso you get

Now convert polar to rectangular

use equations

--->

well, the tangent of pie over 4 is 1, so xover y is one.

get the inverse which is


multiply by inverse sin to gte this

so y=3