Does anyone know which one it is?Or how to do it/ walk through. Please.

Mathematics

1 answer:

satela [25.4K]3 years ago

8 0

We know, the sum of all the angle in an triangle is 180,
So, We can calculate adjacent angle of angle 1,

Let, that adjacent angle = b
So, 34 + 103 + b = 180
b = 180 - 137
b = 43

Now, angle b forms linear pair with angle a, so their sum would be 180
a + b = 180
a + 43 = 180
a = 180 - 43
a = 137

In short, Your Answer would be Option C

Hope this helps!

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