Find a vector of length 5 units which is parallel to a=(4,7,4)

With details and working outs so I can learn. Tnx

38.6°

step-by-step explanation:

resultant is 10 pound

smaller force = 8 pound

angle formed = tan⁻¹(

                        =tan⁻¹(

                          =tan⁻¹(0.8)

                        =38.6°

x:       y:  

-1         4

0         4

1         6

2         18

3         20  

answer is  

c.

56

hope you get this right