If the scalar (dot) product of two vectors is negative, it means that
A) there was a calculator error.
B) the angle between the vectors is less than 90 degrees.
C) the angle between the vectors is 90 degrees.
D) the angle between the vectors is greater than 270 degrees.
E) the angle between the vectors is between 90 and 180 degrees.

Question

Quizplus · Accepted Answer

The scalar (dot) product of two vectors is negative when the angle between them is between 90 and 180 degrees, indicating that the vectors are pointing in more opposite than the same direction.

If the Scalar (Dot) Product of Two Vectors Is Negative