Mrs handson has 2 pies for a party she Calculates that if she cut it evenly they will have 1/8 of a pie how many people at the party

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?

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.

Can someone me with these two circle theorem questions asap?