In the diagram, △ABC∼△DEF . Which expressions are equivalent to cosB ? Select all that apply.

(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.

When turned about its axis of rotation, which shape could have created this three-dimensional object?

What are the soultion(s) to the quadratic equation 40- x^2=0