If two vectors are not perpendicular to each other, how should you add them? [___]

When vectors are not perpendicular, you generally cannot combine their magnitudes directly with the Pythagorean theorem. Instead, resolve each vector into its x- and y-components, add the components along each axis, and use the resulting components to describe the sum. So the correct choice is “Resolve each vector into its x and y components.”

AI-written and checked against the verified answer.