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Deriving Trigonometric Identies from Known Identities

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Uploaded by on Sep 6, 2008

Deriving Trigonometric Identies from Known Identities - In this video I show that if you know about 2 or 3 identities and a few definitions, you can actually derive lots of other trigonometric identities easily!

For more free math videos, visit http://JustMathTutoring.com

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Uploader Comments (patrickJMT)

  • gracias por su ayuda=] oh how does that pick up line go? You be sin^2 and I'll be cos^2 and together be as 1.....my calc teacher used it on me, i thought it was cute

  • lol, nothing like a teacher hitting on a student

  • use the first identity to prove or disprove it!

  • wow, thanks a lot dude. this really helps me out. p.s. hola from the city south of austin.

  • nice! you from san antonio? i moved here a year ago, and still not 100% on all the towns around here : )

    saw you liked the dead kennedys! nice! i saw jello give one of his 'rants' back in nashville when i lived there. he acted and sounded just like he did from back in the day!

  • thank you...

  • no problem! learn 3, get the rest! much better than tons of memorizing!

Top Comments

  • omg, now I dont have to remember all those identities!

    YOUTUBE > TEACHERS

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All Comments (42)

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  • I;m really good at those.

  • I love you is a understatement *_*

  • Thanks man. You just taught me in about 20 minutes (I watched the other identities video) what my teacher had failed to teach me in 5 days. You deserve a Nobel Peace Prize.

  • great job! :)

  • patrick is sumthing that switches my brain on haha

  • You are amazingly clear! Thank you!

  • @ptboy18 is your teacher Mary Kay Letourneau?

  • @ptboy18 is your teacher Mary Kay Letourneau?

  • What I meant to say Trig Identities :) :P

  • Thank you Now I finally understand trig :)

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