Indefinite Integrals

If $\int {{{\tan x} \over {1 + \tan x + {{\tan }^2}x}}dx = x - {K \over {\sqrt A }}{{\tan }^{ - 1}}}$ $\left( {{{K\,\tan x + 1} \over {\sqrt A }}} \right) + C,(C\,\,$ is a constant of integration) then the ordered pair (K, A) is equal to :