Please help!! i need to fill in the statements and reasons while solving it!

(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.

The trigonometric ratios sine and secant are reciprocals of each other

How many verticies does a triangular prims have