The sum of the measures of a tangent-tangent angle and it's minor arc is ______.?

Question

i know the answer is 180 degrees but how do i explain it????

Answer 1

You should placed this in the mat section, but I'll answer it. Well when line is tangent, its tangent to the radius, so therefore is perpendicular which is  90 degrees and if there is another tangent line, that will also be 90 degrees. So their sum will be 180 degrees.