Find the general solution of each of the following equations:
cot x + tan x = 2 cosec x
To Find: General solution.
Given: cot x + tan x = 2 cosec x cos2x + sin2x = 2 sinx cosx cosec x
1 = sin 2x cosec x
cosec 2x = cosecx
sin x = sin 2x
sin x = 2 sin x cos x
sin x = 0 or cos x =
= cos(
)
Formula used: sin = 0
= n
, cos
= cos
= 2n
By using above formula , we have
x = n or x = 2m
where n, m
I
So general solution is x = n or x = 2m
where n, m
I