sin(a+b) = (cos a)(sin b) - YouTube
We may also look at a great example of logic and the importance to have the ability to communicate in the language of our field, whichever field that may be.
Friday, February 24, 2012
Sum Rule Video
A student yesterday gave the Khan Academy on-line videos a ringing endorsement yesterday. I have been looking for a good proof for the sum and difference formulas for sine and cosine and have not been able to put my finger on one. This morning I watched this video on YouTube and it was great. Though not a formal proof, I think if you can stick with it it will make a lot of sense.
We may also look at a great example of logic and the importance to have the ability to communicate in the language of our field, whichever field that may be.
We may also look at a great example of logic and the importance to have the ability to communicate in the language of our field, whichever field that may be.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment