Question 476635
sin(x) - cos(x) = 1
-------------------
sin - sqrt(1 - sin^2) = 1
Sub x for sin(x)
x = 1 + sqrt(1 - x^2)
x-1 = sqrt(1 - x^2)
x^2 - 2x + 1 = 1 - x^2
2x^2 - 2x = 0
x = 0, x = 1
--------------
sin(x) = 0 or 1
--> x = 0, x = pi/4