8. (07.01 MC) If the sin 90° = 1, then which statement is true? (6 points) cos 0° = 1, because the cosine and sine are complements cos 90° = 1, because the cosine and sine are supplements cos 0° = 0, because the cosine and sine are complements cos 90° = 0, because the cosine and sine are supplements

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.

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.