Question

solve tan x 1 = 0 for x.

Answer 1

X=$\pi /4$

Answer 2

tan a = b
 
arc tan b = a 

So 

a = x +1
 
b = 0 
 
tan x + 1 = 0
 
arc tan (0) = 0
 
x+1 = 0
 
x = -1