Can someone help me with this problem

Find the solutions for a triangle with a =16, c =12, and b = 63º

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?