What is x=1 and 3x+y=1 put together

(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 angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

What is the total area of the figure?