Question

HELPPPPPPPPPPPPPPP! B IS WRONG!

Answer 1

This is a right triangle, and the legs are 8 and 15
8/15 represents the division of the legs, then it must be tangent
tangent is the relation of opposite leg and adjcent leg to the angle
The opposite leg must be 8, and the adjacent leg must be 15
Then we must find the angle which opposite leg be 8 and adjacent leg be 15
This is the angle B
Then 8/15 is the tangent to angle B 

Answer: First option  tan B