6th grade math i mark as brainliest

1. what is the formula for finding the vertical distance between two points on a coordinate plane?

(a) compute the maclaurin polynomial m2(x) for f(x) = cos x. (b) use the polynomial of part (a) to estimate cos π 12. (c) use a calculator to compute the error made using the estimate from part (b) for the value of cos π 12. remember that the error is defined to be the absolute value of the difference between the true value and the estimate.

Which one ? is the answer and how to find this answer