Answer:
Step-by-step explanation:
The largest angle is opposite to the largest side.
Since the largest side is BC, the largest angle is A.
Work out the angle measure using the law of cosines:
- cos ∠A = (b² + c² - a²)/(2bc)
- cos ∠A = (3² + 7² - 8²)/(2*3*7)
- cos ∠A = -0.14286
- m∠A = arccos (-0.14286)
- m∠A = 98.2°
