How do you find the third vector C in vector addition problems?

[Fluorine]

Homework Statement

[/B]
Sketch in a third vector, C, whose magnitude and direction are such that A+B+C=0. Vectors A and B both have a magnitude of 5 and form a 30 degree angle (image attached).

Homework Equations

[/B]
How do I go about this question? I have no idea how to start or what to graph.

The Attempt at a Solution

[/B]
Haven't been able to attempt anything yet because I don't know how to start this problem.

 

[Chestermiller]

Homework Statement

[/B]
Sketch in a third vector, C, whose magnitude and direction are such that A+B+C=0. Vectors A and B both have a magnitude of 5 and form a 30 degree angle (image attached).

Homework Equations

[/B]
How do I go about this question? I have no idea how to start or what to graph.

The Attempt at a Solution

[/B]
Haven't been able to attempt anything yet because I don't know how to start this problem.

Do you know how to find the resultant of A and B?

 

[Ray Vickson]

Homework Statement

[/B]
Sketch in a third vector, C, whose magnitude and direction are such that A+B+C=0. Vectors A and B both have a magnitude of 5 and form a 30 degree angle (image attached).

Homework Equations

[/B]
How do I go about this question? I have no idea how to start or what to graph.

The Attempt at a Solution

[/B]
Haven't been able to attempt anything yet because I don't know how to start this problem.

What current knowledge do you have about vectors? Do you know how to find the sum of two vectors (either graphically, or using formulas)? Are you using a textbook, and if so, does it have material about vectors and their addition, etc.? If you do not have a textbook, have you searched on-line for tutorials and similar resources?