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garik1379 [7]
2 years ago
7

Can anyone help me with this math?

Mathematics
2 answers:
Gelneren [198K]2 years ago
5 0

Answer:

126

Step-by-step explanation:

since b is 54 just subtract 54 from 180 to get a as they are in a sttaight line

Brums [2.3K]2 years ago
3 0

Answer:

∠A = 126°

Step-by-step explanation:

Firstly, we can calculate that ∠B is 54° because opposite angles are the same, and a circle is 360° so let subtract these two angles first:

360 - 54 - 54 = 252

Now, ∠A = ∠B so:

252 ÷ 2 = 126

So ∠A = 126°

Another way of calculating this is simply subtracting 54 from 180° as they are both on a straight line and must add up to 180°:

180 - 54 = 126°

Hope this helps!

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