Question

How do you solve `cot(x) = -2`?

Answer 1

Solve f(x) = cot x = -2

Explanation:

Calculator gives ->

`cot x = 1/tan x = -2 -> tan x = - 1/2 -> x = -26.57` deg (Quadrant IV)

Trig unit circle gives another arc x that has the same tan value:

x = - 26.57 + 180 = 153.43 deg (Quadrant II)