All Precalculus Resources
Example Questions
Example Question #1 : Polar Coordinates
Convert from polar form to rectangular form:
Start by multiplying both sides by .
Keep in mind that
Remember that
So then,
Now, complete the square.
Example Question #1 : Convert Polar Equations To Rectangular Form And Vice Versa
Convert the polar equation to rectangular form:
Start by multiplying both sides by .
Remember that
Keep in mind that
So then,
Now, complete the square.
This is a graph of a circle with a radius of and a center at
Example Question #1 : Convert Polar Equations To Rectangular Form And Vice Versa
Convert the polar equation into rectangular form:
Remember that
So then becomes
Now, multiply both sides by to get rid of the fraction.
Since the rectangular form of this equation is
Example Question #2 : Convert Polar Equations To Rectangular Form And Vice Versa
Convert the polar equation into rectangular form:
Start by using the double angle formula for .
Substitute that into the equation gives the following:
Because we need and to get and respectively, multiply both sides by .
Now, recall that .
Example Question #2 : Convert Polar Equations To Rectangular Form And Vice Versa
Convert the polar equation to rectangular form:
Start by taking the tangent.
Recall that
Example Question #3 : Polar Coordinates
Convert the polar equation to rectangular form:
Start by taking the tangent.
Recall that
Example Question #1 : Convert Polar Equations To Rectangular Form And Vice Versa
Convert the polar equation to rectangular form:
Recall that
Substituting this into the given equation gives
Multiply both sides by to get rid of the fraction.
Recall that and that
Example Question #3 : Convert Polar Equations To Rectangular Form And Vice Versa
Convert the polar equation into rectangular form:
Recall that and
Multiply both sides by
Recall that and
Example Question #1 : Convert Polar Equations To Rectangular Form And Vice Versa
Convert the polar equation into rectangular form:
Recall that
Plugging this into the equation gives us
Multiply both sides by to get rid of the fraction.
Recall that
So then the rectangular form of the equation is
Example Question #3 : Convert Polar Equations To Rectangular Form And Vice Versa
Convert the polar equation into rectangular form.
Recall that
Multiply both sides by to get rid of the fraction.
Recall that .