Figure 12.
Polar Coordinates: Mathematicians measure angles counterclockwise
from the horzontal axis.
[This graphic figure can't be produced using text characters
alone. You must draw a line from the origin to the '*' character
at point (8.66, 5.00). Then draw an arc from the X-axis to the
line, next to the "30 Degrees" label.]
<![CDATA[
10 +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| | |
9 + + + + + + + + + + + + + + + + + + + + +
| | |
8 + + + + + + + + + + + + + + + + + + + + +
| | |
7 + + + + + + + + + + + + + + + + + + + + +
| | |
6 + + + + + + + + + + + + + + + + + + + + +
| | (8.66,5.00) |
5 + + + + + + + + + + + + + + + + + + + *+ +
| | |
4 + + + + + + + + + + + + + + + + + + + + +
| | |
3 + + + + + + + + + + + + + + + + + + + + +
| | |
2 + + + + + + + + + + + + + + + + + + + + +
| | |
1 + + + + + + + + + + + + + + + + + + + + +
| | 30 Degrees |
0 +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
| | |
-1 + + + + + + + + + + + + + + + + + + + + +
| | |
-2 + + + + + + + + + + + + + + + + + + + + +
| | |
-3 + + + + + + + + + + + + + + + + + + + + +
| | |
-4 + + + + + + + + + + + + + + + + + + + + +
| | |
-5 + + + + + + + + + + + + + + + + + + + + +
| | |
-6 + + + + + + + + + + + + + + + + + + + + +
| | |
-7 + + + + + + + + + + + + + + + + + + + + +
| | |
-8 + + + + + + + + + + + + + + + + + + + + +
| | |
-9 + + + + + + + + + + + + + + + + + + + + +
| | |
-10 +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
]]>