# Solve the expression sin pi/6 - cos pi/3 .

sin(pi/6) -cos(pi/3)

sin (pi/6)= sin(180/6)

= sin (30)=1/2

cos (pi/3)= cos(180/3)= cos(60)=1/2

Then sin(pi/6)-cos(pi/3)=1/2 - 1/2 =0

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