
General Triangles - Sine and Cosine Rules
... This depends on the information given. i) Given two angles and one side - use the sine rule. (If the side is not opposite one of the angles, you can work out the third angle simply by subtracting the sum of the other two from 180°). ii) Given two sides and an angle opposite one of them - use the sin ...
... This depends on the information given. i) Given two angles and one side - use the sine rule. (If the side is not opposite one of the angles, you can work out the third angle simply by subtracting the sum of the other two from 180°). ii) Given two sides and an angle opposite one of them - use the sin ...