Which is the graph of a function and its inverse?

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?

Which numbers have the same absolute value? choose all that apply. asap will mark at brainliest