8/4 should work, because the numerator's higher than the denominator.
C is the best option and compare it with the equation of circle to get values
43 47 53 59 are the prime numbers
The conversion is


So

We're given the fairly unusual

It's fairly unusual because usually an angle is given in degrees or radians, and typically the radians are a fraction times pi. We'll assume radians.

Ah, there's our .75. The approximate answer is

Third choice.
The exact answer is

also a line through the origin.
Given: Different points and an angles as found in the image
To Determine: The correct name of the angle shown
Solution
An angle is formed when two lines meet at a point. This is as shown below
Let us apply the above to the given image
The angle formed is shown by the red arc.
Hence, the correct name of the angle shown is ∠