Prove that
(secx)(sinxsecx+1)=(sec2x-tan2x+tan x)/cosx

(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 center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Describe how you can act financially responsible.