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Let the sides be abc and their opposite angles be ABC:-

Using the cosine rule angle A: (7^2 +6^2 - 8^2)/(2*7*6) = 75.5 degrees

Using the sine rule angle B: (7*sin75.5)/8 = 57.9 degrees

Angle C: 180 -75.5 -57.9 = 46.6 degrees

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46.6 deg, 75.5 deg and 57.9 deg.

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8y ago
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