#sin((29pi)/12)#
#=sin(2pi+(5pi)/12)#
#=sin((5pi)/12)#
#=sqrt(1/2(1-cos((2*5pi)/12)#
#=sqrt(1/2(1-cos((5pi)/6))#
#=sqrt(1/2(1-cos(pi-pi/6))#
#=sqrt(1/2(1+cos(pi/6))#
#=sqrt(1/2(1+sqrt3/2)#
#=sqrt(1/8(4+2sqrt3)#
#=sqrt(1/8(sqrt3+1)^2#
#=(sqrt3+1)/(2sqrt2)#