ctg(x)=x/0.234 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the equation
$$\cot{\left(x \right)} = \frac{x}{\frac{117}{500}}$$
transform
$$- \frac{500 x}{117} + \cot{\left(x \right)} - 1 = 0$$
$$- \frac{x}{\frac{117}{500}} + \cot{\left(x \right)} - 1 = 0$$
Do replacement
$$w = \cot{\left(x \right)}$$
Move free summands (without w)
from left part to right part, we given:
$$w - \frac{500 x}{117} = 1$$
Move the summands with the other variables
from left part to right part, we given:
$$w = \frac{500 x}{117} + 1$$
We get the answer: w = 1 + 500*x/117
do backward replacement
$$\cot{\left(x \right)} = w$$
substitute w: