Tentukan himpunan penyelesaian dari sin (x+135) - sin (x-135) = 1

sin(a-b)=2cos[(a+b)/2]sin[(a-b)/2]

sin(x+135)-sin(x-135)
=2cos[((x+135)+(x-135))/2] sin[((x+135)-(x-135))/2]
=2cos(x)sin(135)
=2cos(x)*akar(2)/2
=cos(x)akar(2)

cos(x)akar(2)=1
cos(x)=1/2 akar(2)
x=45, 315