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Rufina [12.5K]
3 years ago
7

Help me plssssssssss

Mathematics
1 answer:
Zinaida [17]3 years ago
5 0
We know the sum of the angles in a triangle is 180°. We also know what two of the angles in this triangle are. Using this we can calculate the third angle to be 180-73-51= 56°. We now know that x+21= 56 subtracting 21 from both sides we get x= 35°
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