80 ...........................
Answer:
A linear pair of angles is formed when two lines intersect. Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.
See the attached picture:
to the nearest tenth = 9.2
Tan = o/a and = 3/4 so the opposite is 3 and the adjacent is 4