Solution to 8.4.51

The problem reads as follows:

cot x = 2.3
We know that cot x = 1/tan x so we can re write the equation.

1/tan x = 2.3
1=2.3(tan x)
1/2.3=tan x
Arc tan x (1/2.3) = .4101
There for the solutions for the equation are + or - .4101 + pie*n

*It can also help to chunk tan x after re-writing the equation as 1/u = 2.3 (tan x = u)