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OpenStudy (anonymous):
what is the reference angle of 810?
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OpenStudy (goformit100):
Use trigonometical formula of circular angle.
OpenStudy (anonymous):
the definition of reference angle says that it should be acute. but when i get the reference angle of 810 degrees the answer is 90 which is not acute
OpenStudy (unklerhaukus):
\[0≥810°−n\times360°≥90°\]
OpenStudy (anonymous):
so the answer is 90? even though it isn't acute?
OpenStudy (goformit100):
YES!
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OpenStudy (anonymous):
thank you guys =)
OpenStudy (unklerhaukus):
90° is ok for a reference angle
OpenStudy (goformit100):
WELCOME
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