How do you evaluate #arcsin (sin(3pi)) #?
Let's start with a definition of a function
First of all, it's an angle, sine of which equals to
But there are many angles with the same value of their sine since function
So, we have to find an angle in the intervalС любимыми не расставайтесь! sine of which equals to the same value as
The latter equals to zero. In the interval