If the scalar product of two vectors, and , is equal to −3.5, if , and the angle between the two vectors when they are drawn starting from the same point is equal to 130°, what is the magnitude of ?
A)2.1
B)2.5
C)2.3
D)2.7
E)3.1

Question

If the scalar product of two vectors,  and  , is equal to −3.5, if  , and the angle between the two vectors when they are drawn starting from the same point is equal to 130°, what is the magnitude of  ?
A)2.1 
B)2.5 
C)2.3 
D)2.7 
E)3.1

Quizplus · Accepted Answer

The Answer of If the scalar product of two vectors,  and  , is equal to −3.5, if  , and the angle between the two vectors when they are drawn starting from the same point is equal to 130°, what is the magnitude of  ?
A)2.1 
B)2.5 
C)2.3 
D)2.7 
E)3.1

If the Scalar Product of Two Vectors, and