Triangles 0.0 / 5 ? MathematicsTrianglesGCSEEdexcel Created by: 117millingtonCreated on: 09-02-17 17:44 When labelling a triangle you must: use capital letters for sides and lower case letters for angles 1 of 5 Area of a Triangle is: 1/2 ab sin c 2 of 5 (sine rule) find the length of AB when angle CAB is 83∘, angle ACB is 53∘ and the size of the side AC is 7m (round to 3sf) 8.05m 3 of 5 for trigonometry the inverse of tan is used when tan is brought to the other side of the equation 4 of 5 (cosine rule) find angle CAB when side AB is 8m, side BC is 10m and side CA is 7m (1dp) 83.3∘ 5 of 5
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