I'd like to visually add (graph) vectors, up to three of them.  I'
prefer to simply add them as polar coordinates, although I can easil
convert them to rectangular coordinates.  I'd like Excel to graph on
vector after another, adding the tail of each vector to the head of th
previous vector (or the origin).  At the end, I'd like Excel to draw
vector from the origin of the graph to the head of the last vector an
give the resulting polar coordinates (converting as required).  In th
following table I show how I'd like to format the initial pola
coordinates -- it also shows the calculated x/y end points for the sam
line stretching from the origin.  I have four vectors in this sampl
table just so that I can check my x,y calculations.

Code
-------------------
   Vectors               
 Mag    Angle    Ref Ang    x    y
 100    50    50    64.2788    76.6044
 150    170    10    -147.7212    26.0472
 50    185    5    -49.8097    -4.3578
 50    275    85    4.3578    -49.809
-------------------

The code for the Ref Angle on the first line is:
=IF(B3<90,B3,IF(B3<=180,180-B3,IF(B3<=270,B3-180,IF(B3<=360,360-B3,"ERR"))))

The code for x on the first line is:
=IF(OR(B3<90,B3>270),ROUND(A3*COS(RADIANS(C3)),4),ROUND(A3*COS(RADIANS(C3))*-1,4))

The code for y on the first line is:
=IF(B3<180,ROUND(A3*SIN(RADIANS(C3)),4),ROUND(A3*SIN(RADIANS(C3))*-1,4)