If GM between a number and 1/8 is 1/2.find the number. please solve help me

(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.

Arectangle has a length of 6cm by 8cm what is the length of a diagonal of the rectangle

Solve for the equation. 4x - 13 = 2x + 9