Question

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Answer 1

C

Step-by-step explanation: look in the comments

Answer 2

∠a = 73

Explanation:

∠b = 34

∠a =?

∠a = ∠c

to find ∠a we need to take ∠c and ∠a let x

sum of interior angles of traingle = 180

∠b + ∠a + ∠c = 180

34 + x + x = 180

34 + 2x = 180

2x = 180 - 34

2x = 146

x = 146 ÷ 2

x = 73

∠a = 73