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In triangle ABC, ∠A = 40⁰ and ∠B = 80⁰. What is the value of ∠C?

2 Answers

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A triangle has 180 degrees in total. If there are three sides, one side being 40 degrees and the other being 80 degrees, both combined is 120 degrees. We need to find angle C, which is the last side. So 180-120 is 60 degrees.

Answer= 60 degrees
Hope this helps!
User Guangming Mao
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8.1k points
3 votes

Answer:

c = 60°

Explanation:

The sum of the three angles in a triangle is always 180°. With this in mind, we can easily set up an equation to find the missing angle (let it be c).

So,


\angle A +\angle B + \angle C=180


40+80+c=180


120+c=180


c=180-120


c=60

User Edgar Ortega
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8.0k points