If tan A 1 √z(z²+2+1) ,tan B VI Vz²+z+1 = and tan C = (2-3 + -2+x-1) 1/2, 0< A, B, C, then A + B is equal to:

Question

If tan A 1/ √x(x²+x+1) ,tan B = √x/√ x²+x+1 = and tan C = (x^-3 + x^-2 + x^-1)^1/2 . 0< A, B, C< pi/2 then A + B is equal to:

A. C
B. pi - C
C 2pi - C
D pi/2 - C