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Mathematics 18 Online
OpenStudy (anonymous):

how do you find the reference angle of 250 degrees?

OpenStudy (anonymous):

270-250 =20

OpenStudy (anonymous):

why would you use 270?

OpenStudy (anonymous):

|dw:1315954388737:dw|

OpenStudy (anonymous):

oh ok. thank you!

OpenStudy (anonymous):

you have 4 reference points on your quadrants 90, 180 270 and 360

OpenStudy (anonymous):

you have 4 reference points on your quadrants 90, 180 270 and 360

OpenStudy (anonymous):

you have 4 reference points on your quadrants 90, 180 270 and 360

OpenStudy (anonymous):

i understand now.

OpenStudy (amistre64):

i think reference angels are measured from the 0 180 marks

OpenStudy (amistre64):

|180-250|

OpenStudy (amistre64):

if its between 90 and 270; go with the 180; otherwise go off the 0,360

OpenStudy (anonymous):

so 70?

OpenStudy (amistre64):

id say 70 yes

OpenStudy (anonymous):

ok, thanks ill try that

OpenStudy (anonymous):

well, it says that it wants it in pi form?

OpenStudy (amistre64):

the reference angel for 120 is 60; simply becasue it is 60 away from the 180 mark; and not 30 away from the 90 mark

OpenStudy (anonymous):

the correct answer was 4pi/9

OpenStudy (amistre64):

thats a radian measure

OpenStudy (anonymous):

yes.

OpenStudy (anonymous):

ok. thanks!

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