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OpenStudy (anonymous):
How to find arctan (-1) on a calculator?
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OpenStudy (anonymous):
I get -45, but that's not an option. "Θ = arctan (-1) = 315°, and Θ = arctan (-1) = (315° - 180°) = 135°. " Did this person convert somehow? Or a different calculator???? so confused
OpenStudy (welshfella):
-45 degrees is equivalent to 360-45 = 315 degrees
OpenStudy (anonymous):
thankssss I knew it had to be something simple
OpenStudy (welshfella):
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