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14:36
YouTube
mathonify
Intro to Trigonometric Identities - part 1
In this video I go through a brief introduction to trig identities. I look at well known identities such as sin^x + cos^x = 1, then go through some example problems. Part 2: https://youtu.be/w8whFeSccX0 practice problems: http://bit.ly/2ITWDYL Support the channel: https://www.youtube.com/channel/UCf89Gd0FuNUdWv8FlSS7lqQ/join
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