The limit of (sin1 / x) / X

The limit of (sin1 / x) / X

The function is an odd function and has no definition at 0
When x →± 0, 1 / x approaches to positive and negative infinity respectively
The function value sin1 / X is uncertain
So the left and right limit of function sin1 / X does not exist when x tends to zero

What is the angle of sin1 / 3 pair?
Such as the title

19 degrees, 6 minutes, 36 seconds

A sin1>sin1° B sin1

Because 1 ° = pi / 180,
So 1 ° sin 1 °
So choose (a)
= = = = = = = = =
Just remember pi = 180 degrees
Then pi / 180 = 1 °
1=(180/pi)°.