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Asked by Anonymous

Evaluate for the quadrantal angle cos17(pie)? ( don't have the pie sign)

Is -1 correct?
7 years ago

Answers

Answered by Damon
17 pi = 16 pi + pi
but 16 pi is 8 times around from 0 to 2pi
so we really have
cos pi
which is indeed -1
7 years ago

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