(6) cos xdx=sinx+C (7 sin xdx =-cosx+C (8)see e 2 xdx=[-I-dx= tan x+c 2 cos x (9)lcsc xd= 1dx=-cotx+C 2 SIn (10)secx tan xdx=secx+C (11) cot xdx=-cScx+Cxdx = x +C  (6) cos sin xdx = − x +C  (7) sin cos dx x C x xdx = = +   tan cos 1 (8) sec 2 2 dx x C x xdx = = − +   cot sin 1 (9) csc 2 2 x xdx = x +C  (10) sec tan sec x xdx = − x +C  (11) csc cot csc