write tan x as (1/2){(tan x + cotx) +(tan x -cotx)} bcuz anyway it'll give tanx after cancelling n all...
using d formulae.. tanx=sinx/cosx and cotx=cosx/sinx multiply numberator and denominator by 2..do this for both d operands.. and write it like { (sinx+cosx)^2-1} sinx+cosx=t.. continue..
Moderation Team
![[Post New]](/templates/default/images/icon_minipost_new.gif){kind=icon}
![[Up]](/templates/default/images/icon_up.gif "[Up]"){kind=icon}
36
tan x as (1/2){(
