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Did I answer the qustion correctly? Cos 3 pi = -1...?

2007-06-19 01:50:40 · 1 answers · asked by Confucius 2 in Education & Reference ➔ Homework Help

1 answers

Yes!

cos 3π = cos (2π + π) = cos (0 + π) = cos π = -1

2007-06-19 02:03:34 · answer #1 · answered by MathBioMajor 7 · 0⤊ 0⤋

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