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Mathematics 9 Online
OpenStudy (anonymous):

What is the reference angle of (-9pi/7)

OpenStudy (primeralph):

reference?

OpenStudy (primeralph):

add that to 2pi

OpenStudy (anonymous):

thanks

OpenStudy (primeralph):

Answer?

OpenStudy (anonymous):

-5pi/7

OpenStudy (primeralph):

Your answer should be positive.

OpenStudy (anonymous):

right. 5pi/7

OpenStudy (primeralph):

Yeah.

OpenStudy (anonymous):

thanks

OpenStudy (primeralph):

Ze medal?

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