For the two functions to be equal, the arguments of each must be equal.

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 in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

The result can be shown in multiple forms.

Exact Form:

Decimal Form:

Solve for x sin(pi-x)=sin(x)