How does the function represented in the table change over equal intervals? What does this tell you about the type of function it is?

Can someone answer these problems for me

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

X2 + y 2 = 36 x + y = 6 solve the system of equations.