a. What does Rx represent? b. What does Ryr represent? c. What does 0 represent? d. What does l:| represent? 2. Why does the vector have an arrowhead? What does that arrowhead indicate? 3. Reshape your first vector so that it is completely horizontal. Move that vector to (0,0). What is the value of Rx? RV? E)? la? Do these values make sense? it so it is completely vertical. Move that vector so 4. Drag another vector into the grid. Reshape n. For this new that the tail of the arrow is touching the tip of the other vector on your scree vector, what is the value of bx? by? 9? |:|? Do these values make sense