By <em>trigonometric</em> functions we find that the measure of angle A is approximately 0.12π radians.
<h3>How to determine the missing angle in a right triangle</h3>In this question we have a <em>right</em> triangle, of which the length of two sides are known (AB, BC). We can know the measure of angle A by <em>trigonometric</em> functions:
A ≈ 0.12π radians
To learn more on trigonometric functions: brainly.com/question/6904750
#SPJ1