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6*(sin(pi/2))^2-(6*(cos(pi/2))^2) = 0
6*1^2-(6*(cos(pi/2))^2) = 0
1*6-(6*(cos(pi/2))^2) = 0
6-(6*(cos(pi/2))^2) = 0
6-(6*0^2) = 0
6-(0*6) = 0
0+6 = 0
6 = 0
L <> R
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