For the two functions to be equal, the arguments of each must be equal.
Move all terms not containing to the right side of the equation.
Add to both sides of the equation.
Add and .
Since is on the right side of the equation, switch the sides so it is on the left side of the equation.
Divide each term by and simplify.
Divide each term in by .
Cancel the common factor of .
Cancel the common factor.
Divide by .
The result can be shown in multiple forms.
Solve for x sin(pi-x)=sin(x)