Answer:
C
Step-by-step explanation:
The horizontal line, y=2, is solid and shaded above, so it represents

The slanted line, y=x is dashed and shaded below, so it represents y<x.
Radii? Please explain what that means
7. Alternate interior
8. Congruent
9. Work:
6x - 16 = 2x + 40
4x = 56
x = 14
Your answer is in the picture.
The tangent half angle formula, one of several, is

We have θ is opposite 4 in the 3/4/5 right triangle so



Answer: 1/2
This is actually pretty deep. It says half the big acute angle in the 3/4/5 triangle is the small diagonal angle of the 1x2 rectangle. Similarly, the small acute angle in 3/4/5 triangle is twice the small diagonal angle of the 1x3 rectangle.