Question

Solve
tan x + 1 = 0
for x.

Answer 1

start with
\[\tan(x)=-1\] and then think of points on the unit circle where sine and cosine are the same number except of opposite sign

Answer 2

btw i sent a link with the numerical answer to your last question

Answer 3

tan x + 1 = 0
arc tan (0) = 0

so

x+1 = 0
x = -1

Answer 4

??

Answer 5

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

Answer 6

give a general formual for tan x= -1

Answer 7

tan x = -1
x = arctan (-1) = πn-(π/4), n is integer

Answer 8

x = −π/4 +2nπ