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RE: Trigonometry Identities: sin(-x) = - sin(x) and cos(-x) = cos(x)
I don't always go over sine and cosine trigonometric identities but when I do I usually show that sine is odd and cosine is even ;)
View video notes on the Hive blockchain: https://peakd.com/hive-128780/@mes/trigonometry-identities-sine-cosine-even-odd-functions