Which ratio is not equivalent to 2 : 7? Please help I need the answer now!!

(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 basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

Solve the equation x/4 - 5= -8 -27 -12 -7 12