Question

In triangle ABC which of the following is not true:

                                    

A. Vector AB+BC+CA =0

B. Vector AB+ BC-AC =0                

C. Vector AB+BC-CA =0

D.Vector AB-CB+CA=0

Answer 1

On applying the triangle law of addition in the given triangle, we have:

Hence, the equation given in alternative C is incorrect.
The correct answer is C.