Help with Vector Addition and Subtraction using Head-to-Tail Method

[mz2011grad]

Please Help?Preliminary Problem

1. Homework Statement
Two vectors A and B are defined as follows, A(10cm, 35degrees) and B(8cm,110degrees). Use a protractor, a ruler and graph papers to do this exercise. The lines must be drawn to scale.

a. Sketch vector A and sketch vector B using the same origin.
b. Use a different graph paper for this exercise. Use the head to tail method to sketch R=A+B. Measure the magnitude and direction of R using your ruler and protractor and record them on your sketch.
c. Use a different graph paper for this exercise. Use the head to tail method to sketch R=A-B. Measure the magnitude and direction of R using your ruler and protractor and record them on your sketch.

2. Homework Equations

im not sure...


3. The Attempt at a Solution

so do i just do add or subtract the degrees and use the cos and sin format to do it and how do i suppose to do this...I am really stuck and confuse...to be honest, my mind is blank

 

[berkeman]

1. Homework Statement
Two vectors A and B are defined as follows, A(10cm, 35degrees) and B(8cm,110degrees). Use a protractor, a ruler and graph papers to do this exercise. The lines must be drawn to scale.

a. Sketch vector A and sketch vector B using the same origin.
b. Use a different graph paper for this exercise. Use the head to tail method to sketch R=A+B. Measure the magnitude and direction of R using your ruler and protractor and record them on your sketch.
c. Use a different graph paper for this exercise. Use the head to tail method to sketch R=A-B. Measure the magnitude and direction of R using your ruler and protractor and record them on your sketch.

2. Homework Equations

im not sure...


3. The Attempt at a Solution

so do i just do add or subtract the degrees and use the cos and sin format to do it and how do i suppose to do this...I am really stuck and confuse...to be honest, my mind is blank

No, you don't use trig functions. You use graph paper to solve these graphically.

Show us your sketch for the first question. Then show how you can draw A+B with the head-to-tail method.

 

[mz2011grad]

my mind is blank...how do i start like how :-(

 

[berkeman]

my mind is blank...how do i start like how :-(

a. Sketch vector A and sketch vector B using the same origin.