Chord AB has the same length as the radius of the circle in which it is drawn. Endpoints of a chord AB are points of tangency of two lines in this circle. These two tangents intersect each other at point C. What is the measure of angle ACB?

Let w=23 . what is the value of w + 45 ?

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

Which of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?