Question

Tan^2x - 2 tan x = -1
carilah nilai x

Answer 1

Semoga dapat membantu

Tan^2x - 2tanx + 1 = 0
Misal
Tan x = a

a^2 - 2a + 1 = 0
(a-1) (a-1) = 0

a = 1 atau a = 1

tan x = 1
x = 45 atau x = 225