3 years ago

Solve for 43. 43 = [?] 58° 139° 41° 43

Mathematics

1 answer:

Dovator [93]3 years ago

4 0

Answer:

∠3 = 81

Step-by-step explanation:

Interior angles in a triangle add up to equal 180°

Hence, 58° + 41° + ∠3 = 180

58 + 41 = 99

99 + ∠3 = 180

* subtract 99 from each side *

99 - 99 cancels out

180 - 99 = 81

we're left with ∠3 = 81°

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