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Mathematics 7 Online
OpenStudy (anonymous):

what is the reference angle of 810?

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!

OpenStudy (anonymous):

thank you guys =)

OpenStudy (unklerhaukus):

90° is ok for a reference angle

OpenStudy (goformit100):

WELCOME

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