Find the general solution of each of the following equations:
2 tan x – cot x + 1 = 0
To Find: General solution.
Given: 2 tan x – cot x + 1 = 0 2tan2x – 1 + tan x = 0
2tan2x – 1 + 2tan x – tanx = 0
2tanx(tanx +1) – (1+ tanx) = 0
(2tanx-1) (1+ tanx) = 0
tan x =
=
or tan x = -1 = tan
Formula used: tan = tan
= n
, n
I
x = n or x = n
So the general solution is x = nor x = n
where n
I