These beasts can work with scientific notation, logarithmic and trigonometric calculations, exponential functions, roots and powers, and other long complicated mathematical terms that many people have never even heard of.
And it's probably not too hard to guess that trigonometry will be somehow relevant, so anyone comfortable with their trig functions could probably hazard a guess as to what the right formula is.
We went to see our normal maths teacher to ask him about trig because we didn't understand any of it and he said his class was taking, a whole week and another lesson to learn it.