stop freaking out this happens with every syllabus change. the 2019 people may have had some texts from previous years but the modules were completely scambled so past analysis was made null. take 1984 which used to be in this module about power and politics, moved to human experiences. analysis...
I saw a trial exam question about i^i and considering different arguments for i to arrive at different answers. this has to do with different branches of the principle argument and how e^x is 2pi*i periodic. is this oos?
the easiest way to do 10 is to get |a+b+c|^2 = (a+b+c).(a+b+c) = 3 + 2a.c
so a.(a+b+c) = |a||a+b+c|cos(t) --> 1+a.c = sqrt(3+2a.c)cos(t) --> cos(t) = (1+a.c)/sqrt(3+2a.c).
Now if a = c, then cos(t) = 2/sqrt(5) which is biggest value cos(t) can be under this restriction, thus the smallest angle...