Vector is 3m long, and vector is 4m long. The length of the sum of the vectors must be?

Question

anonymous · Answer

vecotr is missing vector ID. vector unknown. vector line?

amistre64 · Answer

between 4-3 and 4+3

amistre64 · Answer

|dw:1373202751057:dw|

moongazer · Answer

how did you know that it is between 1 and 7?

souvik · Answer

what is the angle between those vectors?

moongazer · Answer

@souvik No angle was mentioned in the problem.

souvik · Answer

so the sum is maximum when the angle between them is zero degree and minimum when the angle is 180 degree..
the maximum sum =4+3=7
and minimum=4-3=1

moongazer · Answer

ok thanks! :)

souvik · Answer

you are welcome...:)

moongazer · Answer

Just a clarification, does it mean that you can't have an exact value for the sum because no angle or direction is specified?

moongazer · Answer

so you just determined what the value of the min and max (possible values) 
@souvik

amistre64 · Answer

that is correct.  Since the sum of vectors produces a visual "triangle"; then we can only assume that the third side is somewhere between 4-3 and 4+3 to account for all the possible lengths

moongazer · Answer

Thanks! :)