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Please help me with my Trigonometry?
Transform each polar equation to an equation in rectangular coordinates and identify its shape.
(a) r = 6
(b) r=2cos theta
1 Answer
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- ?Lv 72 years agoFavorite Answer
(a) r=6
=>
sqr(x^2+y^2)=6
=>
x^2+y^2=36
It is a circle of radius=6;
with the center at (0,0).
(b)r=2cosA (A=theta)
=>
r^2=2x
=>
x^2+y^2=2x
=>
x^2-2x+1-1+y^2=0
=>
(x-1)^2+y^2=1
It is a circle of radius=1;
with the center at (1,0).
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