Question

Tanx=cotx có nghiệm ?

Answer 1

x = 45° or 135°

( x = 45° + n*180° or 135° + n*180°) n: integer

Explanation:

Is there a solution for tan x = cot x?

tan x = cot x

tan x - cot x = 0

tan x - (1 / tan x) = 0

tan² x - 1 = 0

tan x = ± 1

x = 45° or 135°

( x = 45° + n*180° or 135° + n*180°) n: integer