[MOVED] Coterminal angles between -360 and 360 for -420

Jen123

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Oct 21, 2006
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Identify all coterminal angles between -360 degrees and 360 degrees for the angle -420 degrees.

first I divided -420 by 360 which gave me -1.166666667. Then I added 1 to that which left me -.166666667. I multiplied that by 360 which left -60. I then subtracted 60 from 360. Which left 300 degrees. Is this all I have to do and is it correct.
 
why the division? all you have to do to find coterminal angles is add or subtract multiples of 360 degrees ...

-420 + 360 = -60

-60 + 360 = 300
 
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