Specifying two adjacent angles 
and 
and the side between them 
uniquely (up to geometric congruence) determines
a triangle with area
 |
(1)
|
The angle 
is given in terms of 
and 
by
 |
(2)
|
and the sides 
and 
can be determined by using the law
of sines
 |
(3)
|
to obtain
 |  |  |
(4)
|
 |  |  |
(5)
|
