Can someone do my physics test? I’ll cashapp you and mark you brainliest!!!

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?

The verbal translation for the difference of m and 7 increased by 15

How would you find the height of points on the circle? the topic is trigonometry.