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OpenStudy (anonymous):
Express each of the following in terms of a reference angle. Explain, please. 1a. sin 45º 1b. 135º 1c. sin 225º 1d. sin 315º 3a. cos 224.5º 3b. cos 658º 3c. 145.7º 3d. sin (-201º)
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OpenStudy (anonymous):
what is reference angle for you?
OpenStudy (anonymous):
I'm not really sure... I think that's the problem.
OpenStudy (mertsj):
The reference angle is the angle the terminal side of the angle makes with the x axis.
OpenStudy (mertsj):
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