Answer:
<b = 80
<c = 80
Step-by-step explanation:
<b and 100 form a straight line so they add to 180
<b +100 =180
<b = 180-100
<b = 80
angles b and c are vertical angles and vertical angles are equal
<c = <b = 80
Let's solve for x using trigonometric relation ( Cos )
we know,

now



hence, the value of x is 
Answer:
1/2
There are three numbers above 3
And there are a total of 6 sides
Thus giving us 3/6
Simplify to get 1/2
The answer is c hope this helps
Step-by-step explanation:
hope you can understand