Answer:
The answer to your question is 33°
Step-by-step explanation:
Data
∠1 = 39°
∠2 = 108°
∠3 = ?
Process
To solve this problem, remember that the sum of the internal angles in a triangle equals 180°.
Then,
∠1 + ∠2 + ∠3 = 180°
-Substitution
39° + 108° + ∠3 = 180°
-Solve for ∠3
∠3 = 180 - 39 - 108
-Simplification
∠3 = 180° - 147°
-Result
