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Mathematics 7 Online
OpenStudy (darkbluechocobo):

Help with trig reference angles

OpenStudy (darkbluechocobo):

Find reference angle for \[\theta=-855 degrees\]

OpenStudy (darkbluechocobo):

\[-855+3(360)=225\]

OpenStudy (darkbluechocobo):

Because I believe 225 is a quadrant if I am right

OpenStudy (darkbluechocobo):

Or I may be wrong

OpenStudy (mathmath333):

225 is reference angle for \(-855\) it's not a quadrant

OpenStudy (darkbluechocobo):

Yes I got it mixed up with 210

OpenStudy (darkbluechocobo):

Sorry

OpenStudy (mathmath333):

see this for information about quadrant https://www.mathsisfun.com/definitions/quadrant-graph-.html

OpenStudy (darkbluechocobo):

Also question, so my textbook gives me this as an example

OpenStudy (darkbluechocobo):

It says that you take what you find from doing that and subtract it by 360 to find the reference

OpenStudy (darkbluechocobo):

Question so you just do that to find \[\theta'\]

OpenStudy (mathmath333):

sry wait i think the reference angle \(45\) is right as it is in the fourth quadrant

OpenStudy (mathmath333):

openstudy is lagging i think

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