Can someone please help me solve this.

(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 value is not a solution of 8x^3 – 1 = 0

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?