Hi, i'm quite confused, i'm working out all the reflections/rotations for a regualr pentagon.
I was wondering if someone could help with the matrices;
So the rotation matrix is (cos# -sin#, sin# cos#)
Where # is the angle, and my angles are 2pi/5, 4pi/5, 6pi/5, 8pi/5, 2pi - the identity
Do I simply enter my values of pi into the above matrix and that is all that's required?
Then the reflection matrix is (cos# sin#, sin# -cos#)
Once again do I just enter my values of pi?
Many thanks in advance to whoever replies!