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Let the sides be a b c and their opposite angles be A B C and so:-

Using the cosine rule angle A = 57.9 degrees

Using the cosine or sine rule angle B = 46.6 degrees

Angle C: 180-57.9-46.6 = 75.5 degrees

Area: 0.5*6*7*sin(75.5) = 20 square cm rounded

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7y ago
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7y ago

The angles, opposite these sides are 57.9, 46.6 and 75.5 degrees, respectively.

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Q: What are the angles and area of a triangle with dimensions of 7 cm by 6 cm by 8 cm?
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