82 Wright’s. Mathematical Papers. 
* Example 3. 
Ang S.B r 
90 5.00 5.00 
0.00 |— 7.00 
A.O A, — 2.00 
1207: 4.00 2.00 
120 3.464 0.00 
A. 60 A. 2.00 
150 3.00 0.00 
KAB= 90°, AB= 5 = 3.00 2.00 
ABC =120°,, BC= 4. IN. 90 A. 2.00 
348.256 
- 174.128 
