Area of a Triangle SAS Calculator Area = ½ a b sin(C). Side a Side b Angle C (°) Area 7.5 Step-by-step with your numbers: 1. Values used: 2. Side a = 5 3. Side b = 6 4. Angle C = 30 ° 5. Area = 7.5 Did we solve your problem today? 👍 Yes 👎 No Thanks for the feedback! Two sides and included angle. FAQ SAS? Side-Angle-Side. Related calculators Heron's Formula Calculator Find a triangle's area from its three sides. Triangle Area Calculator Find a triangle's area from its base and height.