Homework Help: Precalculus

Posted by Anon on Friday, January 20, 2012 at 7:04pm.

The polar equation of a graph is given below:
r=4/sin(theta)

Give the equation of the line in rectangular coordinates.

If you rotate this graph 40 degrees counterclockwise about the pole, would you add or subtract 40 degrees to θ?

Subtract?

Precalculus - Damon, Friday, January 20, 2012 at 7:28pm
sqrt(x^2+y^2) = 4 [sqrt(x^2+y^2) ]/y

y = 4
(of course :)

add is counterclockwise
Precalculus - Anon, Friday, January 20, 2012 at 7:32pm
So the answer for "Give the equation of the line in rectangular coordinates." is sqrt(x^2+y^2) = 4 [sqrt(x^2+y^2) ]/y?
Or is it the y=4?
Again, that's probably a silly question..

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