Polar Function Graphs
AP Precalculus · Flashcards
AP PRECALCULUS · FLASHCARDS
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QUESTION
What equation relates
r
r
r
,
x
x
x
, and
y
y
y
for polar graphs in the plane?
QUESTION
What is the polar equation of the line through the origin making angle
α
\alpha
α
with the positive
x
x
x
-axis?
QUESTION
What symmetry test indicates a polar graph is symmetric about the line
θ
=
π
2
\theta=\frac{\pi}{2}
θ
=
2
π
?
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ANSWER
Replace
θ
\theta
θ
with
π
−
θ
\pi-\theta
π
−
θ
; equation unchanged. Reflection across
y
y
y
-axis supplements angle to
π
\pi
π
.
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