Find the length of arc AB . Give your answers in terms
of pie

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?

Josephine has a great garden with and area of 2x2 + x - 6 square feet

Average acceleration: i have no idea how to do this.