Because when your running any experiment there will always be an experimental error so always be ready for it so that you can correct that error in your experiment
Answer:
~3°
Explanation:
x^2 + 0.16^2 = 3^2
x^2 + 0.0256 = 9
x^2 = 8.9744
x = sqrt(8.9744) = 2.99... = ~3
