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Solving Oblique Triangles

Problems

Area of a Triangle

How to Cite This SparkNote

Problem : What is the area of Triangle ABC given that a = 4 , b = 7 , and B = 75 o ?

sin(A) = .5520 . A 33.5 o . C = 180 - A - B 71.5 o . Area = 13.3 .

Problem : What is the area of Triangle ABC given that b = 14 , A = 20 o , and B = 120 o ?

C = 180 o - A - B = 40 o . Area = , or in this case, Area = 24.9 .

Problem : What is the are of Triangle ABC given that b = 22 , c = 15 , and A = 48 o ?

Area = ab sin(C) , or in this case, bc sin(A) 122.6 .

Problem : What is the area of Triangle ABC?

C = 180 o - A - B = 55 o . Area = 34.5 .

Problem : What is the area of Triangle ABC?

Area = ab sin(C) 20.4 .

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