If -180o <= 180o , solve the equation

cos(2theta - 70o) = sin(theta+40o)

Printable View

- Mar 28th 2009, 06:39 AMVikySolve the equation??
If -180o <= 180o , solve the equation

cos(2theta - 70o) = sin(theta+40o) - Mar 28th 2009, 10:25 AMstapel
A good start would probably to apply sum and difference identities, so you can get and by themselves, and then work from there.

. . . . .

. . . . .

And note also the double-angle identities:

. . . . .

. . . . .

See where this leads.... (Wink)

If you get stuck please reply showing your steps and how far you have gotten. Thank you! :D - Mar 30th 2009, 07:32 AMVikythanks
how do i insert the theta symbol?

- Jul 20th 2009, 08:00 PMmr fantastic
Type [tex]\theta[/tex].

Read more in this subforum: http://www.mathhelpforum.com/math-help/latex-help/