Find the measure of the indicated angle to the nearest degree 29/31

Answer:
Step-by-step explanation:
Cos(theta) = adjacent / hypotenuse.
Adjacent = 29
Hypotenuse = 31
Cos(theta) = 29/31
Cos(theta) = 0.5355
theta= cos-1(0.5355)
theta = 20.69
Answer: (Rounded) = 21