Using Double Angle Identities to Solve Equations, Example 1

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Uploaded by on Jan 3, 2011

Using Double Angle Identities to Solve Equations, Example 1.
In this video, I use some double angle identities for sine and/or cosine to solve some equations. Great fun!! For more free math videos, visit http://PatrickJMT.com

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Education

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Uploader Comments (patrickJMT)

  • im your biggest fan patrick!! go patty!

  • @Toronto2245 : )

Top Comments

  • god bless mathematicians like you 

  • Really needed this. Thanks a bunch!

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All Comments (11)

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  • my brain is turning to mush

  • I really didn't get the part where you factor it out. How did you just do it like that, I got it for this equation but I don't think I'd be able to do it on another one...lol. I have a math exam worth 40% tomorrow, and I'm going through all your videos. Thanks Patrick, though! :]

  • I understood everything up to the point where you made y=2x. why did you do that? :/ i'm confused

  • im not sure but is the first factor suppose to be 5/-2 to = -2.5

    however this is a great method respect how you explain this process

  • i love u

  • My professor didn't teach it quite well. Thank you SOO MUCHHH for this video.

  • good video but make the audio louder!!

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