Hello

Quesiton:

Find the rectangular form of the equation of the tangent line to the polar curve at the point corresponding to

How to do that?

I mean finding it inRECTANGULAR FORM!

i know that

I will calculate at , and this is easy ..

The problem here is that, how can I find the equation of the tangent line inRECATNGULAR FORM??

The equation of the tangent line is :

m = the slope , and this one will be calculated by using the formula ..

but what about x1 and y1?