tanxsecx-3tanx=0

Question

Solve equation on the interval [0𝜋, 2𝜋)

Answer 1

Hi Alanna:

Let's solve this one!

tan x sec x - 3 tan x = 0

tan x (sec x - 3) = 0

=> tan x = 0 or sec x - 3 = 0

=> x = 0 o π; or sec x = 3

=> x = 0 or π or cos x = 1/3

=> x = 0 or π or x = arccos 1/3