octave:1> cos(pi/2)
ans = 6.1230e-17
So to be totally honest with you: this of course has a reason. The reason being that Octave (or it’s non-free sibling Matlab) actually compute cos(pi/2) by dividing the number which is stored as pi by two and then applying the cos-operation to that number. The result is this tiny, yet still non-zero number.
(For anyone who wants to know: pi = 3.14159265358979.)
Sorry for not posting anything this month so far, but I’ve been rather busy with university and work. Well mostly university, but I’m adding “work” to make it seem like more.. (and to have an entry to file under that category.. 
)
Anyway, physics is just great. I’ve taken something like 5 extra courses already and am enjoying a solid 60 hours week or something.. to put it lie this: I’m either sleeping, drinking coffee or doing maths most of the time. I am actually solving some equation right now. Honestly.
All the same I wasn’t actually planning on using a whole paragraph complaining about my workload ’cause I’m really having fun doing that stuff. We’re doing very much maths right now (four out of five of my lectures are maths lectures) but that’s mostly fine (ever proved that sqrt(2) isn’t an integer? and two days later that it is actually a real number?) and I’m really looking forward to the physics courses later on during my studies.
I was actually planning to make this a really long post, but I just looked at the watch and I need sleep more than those 15 minutes of fame I’m hoping to get through your combined lobbying efforts due to my enormous volume of posting.. (this is the moment I noticed that I was begining to write nonsense.. I digress.. )
Hope you all are having a great time as well. Catch you later..