Question

AB and BC are tangents of circle P. What is the value of x?

Answer 1

There are several information's already given in the question. It is very important to look at the attached diagram very closely. The angle given in the question is 73 degrees.
Then
x = 180 - 73
   = 107 degrees
I hope that this is the answer that you were looking for and the answer has actually come to your desired help.

Answer 2

1) 107
2) 9793 miles
3) 2.25
4) FE
5) 50 mm