Answers

2014-12-02T19:36:19+08:00
To find the reference angle of a negative degree, just add 360 degrees to it.
Therefore, -410 degrees + 360 degrees = 50 degrees :)
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2014-12-02T19:42:31+08:00
Simply add/subtract the given numerical degree by 360:
-410+360=-50
-410-360=-770
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