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Mathematics 20 Online
OpenStudy (anonymous):

If the polar coordinate is (3 , 5pi/4) determine the other polar coordinate (r , theta) of the point if: r > 0 , theta > 2pi

OpenStudy (ipwnbunnies):

You mean rectangular coordinates?

OpenStudy (anonymous):

nope the polar one...i put down ( 3 , 10pi/4 ) but i got it wrong

OpenStudy (anonymous):

since thats greater than 2pi... this one really has me stuck

OpenStudy (ipwnbunnies):

Because 10pi/4 is over 2pi... I don't get it. You're already given a polar coordinate.

OpenStudy (anonymous):

you know how there are many ways to write polar coordinates? another way to write (3 , 5pi/4) is (-3, pi/4) on a r< 0 , 0 < theta < 2pi scale.... but i need it on a r>0 , theta > 2pi scale

OpenStudy (anonymous):

Just add 2Pi to the angle. There's infinite points of the form 5/4 Pi + 2kPI

OpenStudy (anonymous):

what do you mean?

OpenStudy (anonymous):

2pi = 360 degrees, if you rotate 360 degrees what happens?

OpenStudy (anonymous):

it becomes 10pi/4???

OpenStudy (anonymous):

Are you viewing polar coordinates and having problems changing bases of fractions?

OpenStudy (anonymous):

no i just need to figure out how to change (3, 5pi/4) to a r > 0 , theta > 2pi scale

OpenStudy (anonymous):

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