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    OlympiadEasyGeometry10–12

    A triangle has two sides of 77 cm and 88 cm with an included angle of 60∘60^\circ. What is its area, in cm²?

    Um triângulo tem dois lados de 77 cm e 88 cm com um ângulo entre eles de 60∘60^\circ. Qual é a sua área, em cm²?

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    Solution

    Step 1 of 3

    1. 1.The area of a triangle from two sides and the included angle is 12absin⁡C\frac{1}{2}ab\sin C.