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Mathematics 13 Online
OpenStudy (anonymous):

Will give Medal!! Change the rectangular coordinates to polar coordinates with r > 0 and 0 ≤ θ ≤ 2π. (- sqroot 3,-1)

OpenStudy (amistre64):

what relation do we know between r x and y ?

OpenStudy (anonymous):

r^2=y^2+x^2

OpenStudy (amistre64):

good, and they give you and x and a y, so what is r?

OpenStudy (anonymous):

is it -2

OpenStudy (anonymous):

or squarroot 4

OpenStudy (amistre64):

sqrt4, which simplifies to r=2

OpenStudy (amistre64):

what trig function do we know that relates an angle to y and x?

OpenStudy (anonymous):

7pi/6

OpenStudy (amistre64):

or if you know the special triangles .... this might be simpler

OpenStudy (amistre64):

negative and negative, so yeah, it bigger than pi by a little bit

OpenStudy (amistre64):

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OpenStudy (anonymous):

i got it right i ended up using my unit circle..Thank you!!

OpenStudy (amistre64):

;) good luck

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