TR-35: Using Conjugate Identities in Trig Proofs (Trigonometry series by Dennis F. Davis)
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- čas přidán 6. 09. 2024
- Review of conjugates and why they are useful in proving trig identities.
Three more worked-out Proofs: TR-35X [ • TR-35X: Using Conjuga... ]
Series introduction including complete video list:
TR-00: [ • TR-00: Introduction to... ]
International A level, Intl A Level, IAL, Edexcel, Pearson exam board, CIE, Cambridge exam board, P3, P2, Year 10, Class 11
Thanks! very good job!
Very helpfull!!!
Gee you explain things well. I can now see where the “difference between two squares” comes from. (Is it the same as the “difference OF two squares” ?)
When do we get to see Euler's Formula. This course is all too real.
Hi James Cook, I can't tell if you are trolling me!
Your own videos cover topics more advanced than this.
@@DennisDavisEdu well, I only am just now teaching trigonometry... I don't think my course is as organized as yours. But, I always advocate for more complex math :)
That's nice of you to say. Please feel free to send your students over to some of my vids as a supplement to your own lectures and instruction. Complex numbers will be the last topic I cover and I'm not sure I'll get as far as Euler's Formula. I've published every video I had ready. Now I can't publish more until I create more. Tentatively, Odd/Even will be next, then half-angle, double-angle, sum and difference identities, then graph variations (amplitude, horiz/vert shift, period) then finally polar coordinates and complex numbers. Take care!
@@DennisDavisEdu For the (second) example (at 6:20), and for proving other trigonometric identities, is there only one correct answer, or is there a variety of ways to prove them ? I did it differently to you and I ended up with sin (squared) theta + cos (squared) theta = 1 .
@@sneakypress There can be more than one correct method to prove an identity. Good for you, good luck with your studies!