There is an angle equal 0.54 radians and opposite leg equal to 3 units, I need to find the length of the adjacent leg. I know that I have to do ${\rm leg} = \frac{3}{\tan(0.54 \text{ rad})}$.
I got this task from books and there is the determination $0.54 \text{ rad} = \frac{3}{5}$ but there isn't any description how to get result from 0.54 radian to $\frac{3}{5}$. I tried to find $0.54 \text{ rad} = \frac{54}{100} = \frac{27}{50}$ but I couldn't do it. How can I get $\frac{3}{5}$ from 0.54 radian or from another number, for example 0.36? I found answer here, but I couldn't understand because I go to school and didn't find description such method in book my level
update I know answer, I understand solving, but I can't understand how to get $\frac{3}{5}$ from $0.54 \text{ rad}$.