IF x = sin-1(b6 + 1) = cos-1(b4 + 1) + tan-1(a2 + 1) then find the value of sin(x + π/4) + cos(x + π/4)
We have
x = sin-1(b6 + 1) = cos-1(b4 + 1) + tan-1(a2 + 1)
It is possible only when a = 0
Thus, x = sin-1(1) + cos-1(1) = tan-1(1)