A lot of the answers I read/get on this site are something like
θ=cos−1⎛⎝axbx+ayby+azbz∥a⃗ ∥∥b⃗ ∥⎞⎠
a⃗ ⋅b⃗ =∥a⃗ ∥∥b⃗ ∥cos(θ)=axbx+ayby+azbz
Edit: I cannot directly seem to copy/paste them in either or know how to make the weird symbols. Please view the link below.
And like, how/where can I learn to read this very much hard-to-read code and turn it into actual mathematics that I can either write on paper or use for java code?
For example, I get that those weird lines are meant to be a vector or sumink, but then he says,
So yeah, what does that mean? I get the square root thingy, but what is with the A and the tiny x thing, and whats with the two as well? A big A with a tiny 2 and an x by it? What is that meant to mean?
As I say, the above is only an example (You can find it here - How to calculate the 'rotation' between 2 coordinates?), and I keep having this problem time and time over again on this site. The problem being, I have a brilliant answer, but have absolutely zero idea how to actually even read it!
So how/where can I learn to read this stuff?