SOLUTION: How do i find an exact value for cos(7pi)?
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Question 703702: How do i find an exact value for cos(7pi)?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
You know that is a complete revolution, so
that and , and , etc. are all
the same angle.
I can say:
This says that the given angle is plus 3 complete revolutions ( no change at all )
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