What multiplies to be 60 and adds up to be 16

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?

Which point has an coordinates of (2,0) ? a

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?