I still don't understand how you've mentioned to transform the right side equals the left side.
1. I don't understand how i would transform anything on the right side to have a \sqrt{2}
2. I do know the answer but i don't know how to get there. I used wolframalpha and the answer is...
Homework Statement
sin(2x)-cos(2x)=sqrt(2)sin(2x+Api), then the number 0 < A = ____ < 2
Homework Equations
http://bit.ly/9njiUW <-- trig reference sheet with formulas and identites
The Attempt at a Solution
So I start with the left side of the equation and attempt to make it...