# How do I solve for 0 <= x < 2pi? tan x - sec x +1 = 0

##### 1 Answer

May 19, 2018

x = 0

#### Explanation:

Reminder:

Equation (1) becomes:

Trig unit circle and property of cos x function -->

a.

This answer is rejected because of the above condition:

b.

x = 0.

Check.

x = 0 --> tan x = 0 --> cos x = 1 --> sec x = 1

tan x - sec x + 1 = 0 - 1 + 1 = 0. Proved.