Example 2.3

R = rZ[30 Degree] ; R // Nice

( Sqrt[3] 1 ) ------- -- 2 2 ... [3] - ------- 2 2 0 0 0 1

PA1 = {0, 2, 0} ; PA1 // Nice

( 0 ) 2 0

PA2 = R . PA1 ; PA2 // Nice

( -1 ) Sqrt[3] 0

Created by Mathematica  (September 7, 2003)