You can put this solution on YOUR website! Find the values of x in the interval 0° ≤ x ≤ 360° for which
sin(x) = cos(x)
sin(45º)=cos(45º) (in quadrant I where both sin(x) and cos(x)=√2/2)
sin(225º)=cos(225º) (in quadrant III where both sin(x) and cos(x)=-√2/2)