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OpenStudy (anonymous):
check all that apply. pi/4 is the reference angle for: A.19pi/4 B. 12pi/4 C.7pi/4 D.15pi/4 ?????
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OpenStudy (luigi0210):
Do you know what a reference angle is?
OpenStudy (anonymous):
no not really.
OpenStudy (luigi0210):
It is the angle/radian that is closest to the x-axis
OpenStudy (anonymous):
oh okay. thanks. can you help me with this question?
OpenStudy (luigi0210):
Well what radian is of pi/4 is closest to the x-axis?
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OpenStudy (anonymous):
i dont understand what formula i have to use?
OpenStudy (luigi0210):
There really isn't a formula.
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