Plz help me 1+1 . I really need help plz thx

Describe all the numbers that when rounded to the nearest thousand are 645,000

(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.

Draw a scaled copy of the circle using a scale factor of 2