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Question #fa554

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Jul 12, 2016

#sin(pi/3+7/6pi)+ sin(pi/3)+ sin(7/6pi)#

#=sin(2/6pi+7/6pi)+ sin(pi/3)+ sin(pi+pi/6)#

#=sin(9/6pi)+ sin(pi/3)-sin(pi/6)#

#=sin(3/2pi)+ sin(pi/3)-sin(pi/6)#

#=sin(pi+pi/2)+ sin(pi/3)-sin(pi/6)#

#=-sin(pi/2)+ sin(pi/3)-sin(pi/6)#

#=-1+sqrt3/2-1/2#

#=-3/2+sqrt3/2#

#=1/2(sqrt3-3)#

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