Question

use the diagram below to answer questions 2-3. what is the value of a
A 34
B 56
C 68
D 146
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Answer 1

I just just did the assignment and the answers are:
1) 31
2) 68
3) 28
4) 35
5) 95
6) 126
They are 100% correct.

Answer 2

We have been given a diagram and we need to find the value of arc angle a.

According to one of the circle theorems the angle at the centre of a circle is twice the angle at  the circumference subtended by the same arc.

Therefore, arc angle a will be twice of the angle at circumference, that is, 34 degrees.

Therefore, value of angle a is:

$a^{0}=2*34=68^{0}$