What’s the equivalent ratio to 64 to 16

If u give wrong answer ill report u : )

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Is this a polynomial function? i need to know asap