Mathematics, 02.05.2021 02:30, Chan592

In triangle ABC, m∠A=(6x+9)∘, m∠B=(x−8)∘, and the exterior angle at C is 141∘. What is the measure of angle B?
12∘
20∘
141∘
129∘

Answers: 3

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In triangle ABC, m∠A=(6x+9)∘, m∠B=(x−8)∘, and the exterior angle at C is 141∘. What is the measure...