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More Trig Identity Proofs .

  • Thread starter VanKwisH
  • Start date
  • #26
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Hey, sorry - it's bedtime for me. You've got the second one. If you still don't see it, just leave it for tomorrow over breakfast. You won't believe that you couldn't see it before.

I don't understand how I'm supposed to read the 3rd problem (you might want to try learning to use the Tex editor if you want to post more math questions here). From the looks of it though, it's going to be more use of the sin(a+b) and cos(a+b) identities, plus a bunch of algebraic rearranging.

Good luck, and good night.
 
  • #27
108
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where do i learn about the tex editor??
 
  • #28
662
0
where do i learn about the tex editor??
When you enter a new post or a response using the "go advanced" rather than "quick reply", there's a button on the toolbar with a capital sigma ([tex]\Sigma[/tex]) - click that. You'll get the "Latex Reference" pop-up box; just click on the different drop-down menus to find what you need.

You can also just quote someone else's post that has some Tex-formatted math text, and you'll see what the codes look like.
 

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