Cho hình lăng trụ đứng ABC. A'B'C' có tất cả các cạnh bằng nhau. Góc giữ hai đường thẳng AA' và BC' bằng:

To decrease an amount by 16% what single multiplier would you use

A50-foot ladder is leaning against a vertical wall. if the base of the ladder is 45 feet from the base of the wall, find the angle the bottling of the ladder makes with the ground.

The coordinates of one point of a line segment ate (-2,-7). the line segment is 12 units long. give three possible coordinates of the line segment’s other end point.