Week <
preliminary notes
Section 1 3 : Polar Coordinates
.
Learning objectives
1) locate points using polar coordinates
2) Converttwo
rectangular
and
polar coordinates
3) Sketch polar curves
4) Convert equations btw coordinate systems
5) identify symmetry in polar curves
Definitions
Polar
orgin
Coordinate system :
and
Points represented
O= angle
w/
+ X
as
(r
,
axis
Formulas
X = rcosO,
Yersint ,
r2 = X2 + y 2 ,
special notes
multiple angles
can
rep
.
Same
point
tant =*
a)
where
=dist from
.