Question 1058408
Since tan x = sin x / cos x, this equation can be rewritten as:


2(tan x)(cos x) - 1 = 0


2(sin x)(cos x)/(cos x) - 1 = 0


Canceling (cos x) from the first term leaves:


2(sin x) - 1 = 0


2(sin x) = 1


sin x = 1/2


x = arcsin(1/2)


<strong>x = 30 degrees, 150 degrees</strong>