Module of Vector Sum: 3V2in, 3cm, 6cm & 5cm

[luiseduardo]

Determine, using the vector components, the module of the vector sum of the four vector data in the figure.
Consider = 3V2 inches, b = 3 cm, c = 6 cm and d = 5 cm.
Adopt: sin α (alpha) = 0.60; cos α (alpha) = 0.80 and
sin 45 degrees = cos 45 degrees = V2/2

http://img233.imageshack.us/img233/5909/sssfv.jpg

 

[CFDFEAGURU]

If you are looking for help, please show an attempt at the solution. Don't just post the question and expect it to be answered.

Thanks
Matt

 

[HallsofIvy]

Do you mean that the length of vector a is [itex]3\sqrt{2}[/itex] inches? And why in the world would one length be given in "inches" and the other in "cm"? Are you sure a is not [itex]3\sqrt{2}[/itex] cm as well?

Since the problem says "using the vector components", what are the vector components of the four vectors?

 

[luiseduardo]

I'm sorry, google translate :(
a = 3V2 cm , b = 3 cm, c = 6 cm e d = 5 cm.

sen α (alpha) = 0,60; cos α (alpha) = 0,80; e sen 45 graus = cos 45 graus = V2/2

And CFDFEAGURU, I don't know how to do this question, please if anyone knows how to do please tell me. I have the answer, but I don't know how to do.

The answer is 4.

 

[Jebus_Chris]

Add up all the x-components of the vectors and then add up all the y-components of the vectors.