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RE: Trigonometry Identities: cos(2π + x), sin(2π + x), cos(π/2 -x), sin(π/2 -x)

in DTube • 2 years ago

I don't always prove trigonometric identities but when I do I usually rotate a line by the angle specified in the identity and determine the new trig ratios ;)

View video notes on the Hive blockchain: https://peakd.com/hive-128780/@mes/trigonometry-identities-cos-sin-of-2pi-x-and-pi-2-x

2 years ago in DTube by
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