Question

If the magnitude of the sum of two vectors is greater than the magnitude of either vector, then: 

A. the scalar product of the vectors must be negative 

B. the scalar product of the vectors must be positive

 C. the vectors must be parallel and in opposite directions

 D. none of the above


Pls explain.​

Answer 1

Answer:

Option b will be the answer

Answer 2

`Answer:

             B. the scalar product must be positive

Explanation:

              as we know the sum of two vectors will be greater when the the angle between them is less than 90 degree

            A.B=AB cos theta  

           cos theta will be positive when the angle between vector is less than 90 degree

                so we can say dot product of these vector will be always positive