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Mathematics 6 Online
OpenStudy (anonymous):

Reference angle help?

OpenStudy (anonymous):

zepdrix (zepdrix):

Do you know where pi is located on the unit circle? :)

zepdrix (zepdrix):

Is 5pi/6 larger or smaller than pi?

OpenStudy (anonymous):

@zepdrix 5pi/6 is smaller

zepdrix (zepdrix):

and where is pi located? :)

zepdrix (zepdrix):

one full spin is 2pi, ya?

OpenStudy (anonymous):

Oh I though pi was just the circumference, didnt know it was 2pi

zepdrix (zepdrix):

|dw:1431669463373:dw|So if we're a tiny bit less than pi, we're somewhere over here, ya?

OpenStudy (anonymous):

That looks like B...Or D....cant tell

zepdrix (zepdrix):

From quadrant 2, to find your reference angle, you subtract the given angle from pi. \(\Large\rm \pi-\frac{5\pi}{6}=reference~angle\)

OpenStudy (anonymous):

I got 0.52359877559829887307710723054658 as my ref angle

OpenStudy (anonymous):

Which is...B, so b is right right? @zepdrix

zepdrix (zepdrix):

yay good job \c:/

OpenStudy (anonymous):

thanks so much

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