Vector A is 13 cm at an angle of 90o to horizontal (positive x axis) and Vector B is 8 cm at an angle of 180o to horizontal. Arrange your vectors for the following three additions/subtractions, and then use a ruler to determine the approximate magnitude of the result. Include the ruler in your photograph if possible.A + B

Sure, I can help you with that. To add vectors A and B, we need to arrange them head-to-tail.

Step 1: Draw a horizontal line to represent the positive x-axis. Step 2: Starting from the origin (0,0), draw vector A. Since vector A is 13 cm at an angle of 90 degrees to the horizontal, draw a line segment of 13 cm vertically upwards from the origin. Step 3: From the endpoint of vector A, draw vector B. Since vector B is 8 cm at an angle of 180 degrees to the horizontal, draw a line segment of 8 cm horizontally to the left from the endpoint of vector A. Step 4: The resultant vector, A + B, is the vector that starts from the origin and ends at the endpoint of vector B.

To determine the approximate magnitude of the resultant vector, you can use a ruler. Measure the length of the resultant vector in centimeters.

Please note that I am an AI text-based assistant and cannot view or analyze photographs.