{Rewrite the expression using double angle formulas.}
6cos^2x-3+6sinxcosx
I think I have it down to 3(2cos^2x)-(2sinxcosx) I'm not sure how to do this problem... please help A.S.A.P! Thanks!

Question

{Rewrite the expression using double angle formulas.}    
6cos^2x-3+6sinxcosx
  I think I have it down to 3(2cos^2x)-(2sinxcosx)  I'm not sure how to do this problem... please help A.S.A.P!  Thanks!

anonymous · Answer

Do you know the definition of the double angle formula?

anonymous · Answer

Yes, I think...   I'm not sure which one to use.

primeralph · Answer

Just start with anyone for cosine, apply all you know and slug it out. Eventually, you'll get there.

anonymous · Answer

What form are you trying to get to?

anonymous · Answer

I don't know. I just typed the equation in as it says here on my handy-dandy paper.  It's really just asking me to simplify as much as I can.

anonymous · Answer

could you simplify cos^2(x) into a sin(x)cos(x) combination using one of the formulas?

anonymous · Answer

I believe so.