In a ΔABC, ∠B + ∠C = 110°, then find the measure of ∠A.
Answer & explanation
Correct answer: option 2
Concept
In an triangle
∠A + ∠B + ∠C = 180°
Solutions
∠A + 110° = 180°
∠A = 180° - 110°
∠A = 70°
Therefore, ∠A = 70°
In a ΔABC, ∠B + ∠C = 110°, then find the measure of ∠A.
Correct answer: option 2
Concept
In an triangle
∠A + ∠B + ∠C = 180°
Solutions
∠A + 110° = 180°
∠A = 180° - 110°
∠A = 70°
Therefore, ∠A = 70°