In triangle , angle
,
, and side
.
The sum of three angles in any triangle is .
Find the value of by using the law of sines.
Law of sines : .
Consider .
Substitute the values ,
, and
in above equation.
Find the value of by using the law of sines.
Consider .
Substitute the values ,
, and
in above equation.
The angle ,
, and
.