Dom's blog # 3

chapter 11- 1
converting to rectangular
x=r cos theta
y=r sin theta
and convert to polar use the formulas
r=squared root x squared plus y squared
Example: Give the polar point for (3,5)
r=squared root 3 squared plus 5 squared= squared root of 34
tan theta=three over 5
theta= tan inverse=31
theta=211
= squared root of 34, 31 and the negative squared root of 34,211