In this video I go over the proof for the trigonometric identity sin3x = 3sinx - 4sin3(x). This proof uses the summation identity sin(x+y) multiple times, as well as several other identities, to simplify the angle from 3x to just x. I will be using this trig identity in later videos, so it is better to solve this separately in this video. This is a very useful video in arranging trig equations and identities in an effective problem solving way, which is useful to know for any general mathematical proof; so make sure to watch this video!
Watch on BitChute: https://www.bitchute.com/video/PhpnZhZ8kIoW/
Download PDF Notes: https://1drv.ms/b/s!As32ynv0LoaIhuEOqSFuescqzEHK6Q
View Video Notes Below!
Download These Notes: Link is in Video Description.
View These Notes as an Article: https://steemit.com/@mes
Subscribe via Email: http://mes.fm/subscribe
Donate! :) https://mes.fm/donate
Reuse of My Videos:
- Feel free to make use of / re-upload / monetize my videos as long as you provide a link to the original video.
Fight Back Against Censorship:
- Bookmark sites/channels/accounts and check periodically
- Remember to always archive website pages in case they get deleted/changed.
Join my private Discord Chat Room: https://mes.fm/chatroom
Check out my Reddit and Voat Math Forums:
Buy "Where Did The Towers Go?" by Dr. Judy Wood: https://mes.fm/judywoodbook
Follow My #FreeEnergy Video Series: https://mes.fm/freeenergy-playlist
USEFUL TIP: If I'm going too fast or too slow, play this video at a different speed.
-- TOP SECRET LIFE HACK: Your brain gets used to faster speed (#Try2xSpeed)
-- #Try4xSpeed by Replacing youtube.com with hooktube.com in the video URL ;)
Trigonometric Identity:
So easy to follow, great teaching. Your steemit and YouTube channel are 🔥🔥🔥