I have to make use of:
In order to prove:
ect.
It looks like they are connected but I just can't see how they are connected.
Below is some of my working.
I am then promptly stumped
Should I be working with LHS, what sort of substitutions should I be doing?
You may also need trigonometric sum formulas.
I'm fishy on how to add Latex in a forum post, so you get a link!
Trigonometric Addition Formulas -- from Wolfram MathWorld
Then, note that sin(3x)=sin(x+2x)
Mess with the LHS, and remember all of your identities!!!
Hi!Evales,hope ur having a great time.
RHS side of the identity is in single angle form and the LHS is in a multiple angle form. Main objective is to convert multiple angle to single angle.
You may use addition formula for example sin3x=sin(x+2x),
sin4x=sin(3x+x) or sin(2x+2x).when you will expand them,the expansion will involve multiple angle(2x or 3x) now again use addition formula to convert the multiple angle to single angle.keep on doing this until all multiple angles are converted into single angle.
NOTE:conversly single angle can also be converted into multiple angle eg sinx=sin(2x-x) or sin(3x-2x) etc.
Hope this will help.