Vertical angles are supplementary, true or false?

Consider the functions below. function 1 function 2 function 3 select the statement which is true about the functions over the interval [1, 2] a b function 3 has the highest average rate of change function 2 and function 3 have the same average rate of change. function and function 3 have the same average rate of change function 2 has the lowest average rate of change d.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Through non-collinear points there is exactly one plane.