y=−2⋅sin(4π/3−π/6)+1 = −2⋅sin(7π/6)+1 = −2⋅sin(π +π/6)+1 = −2⋅(-sin(π/6))+1 = 2⋅sin(π/6)+1=2*1/2 +1 = 2
y=−2⋅sin(4π/3−π/6)+1 = −2⋅sin(7π/6)+1 = −2⋅sin(π +π/6)+1 = −2⋅(-sin(π/6))+1 = 2⋅sin(π/6)+1=2*1/2 +1 = 2