SOLUTION: hello tutors i really need help with this problem. what is the expression of tan (-220) is equivalent to ?

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Question 600726: hello tutors i really need help with this problem.

what is the expression of tan (-220) is equivalent to ?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
what is the expression of tan (-220) is equivalent to ?
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Add 360 --> 140 degs
tan(140) =~ -0.8390996