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What are the interior angles to 1 decimal place of a scalene triangle with sides 12 cm 14 cm and 16 cm showing work?
Wiki User
∙ 10y ago
Let the sides be a, b and c and their opposite angles be A, B and C
Using the cosine rule angle A = 75.5 degrees
Using the cosine rule angle B = 57.9 degrees
Angle C muct be 46.6 degrees because there are 180 degrees in a triangle
Cosine Rule: cos A = (b2+c2-a2)/(2*b*c)
Wiki User
∙ 10y ago
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