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  • 25-01-2021
  • Mathematics
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what is the measure of <A in the triangle below​

what is the measure of ltA in the triangle below class=
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Anisatunizzati
Anisatunizzati Anisatunizzati
  • 03-02-2021

Answer:

∠A = 62°

Step-by-step explanation:

∠ACB = 180 - 116 = 64°

∠A + ∠B + ∠C = 180°

(3x - 13) + (2x + 4) + 64 = 180°

3x + 2x - 13 + 4 + 64 = 180°

5x + 55 = 180°

5x = 180 - 55

5x = 125

x = 125/5

x = 25

∠A = 3x - 13

∠A = 3(25) - 13

∠A = 75 - 13

∠A = 62°

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