[ (sin(10°))^2 ]·[ sec(20°)·(1 + sec(40°)) + 2(cos(80°) + cos(40°)) / (cos(40°)·cos(80°)) ] =[ (sin(10°))^2 ]·[ sec(20°)·(1 + sec(40°)) + 2(cos(80°) + cos(40°)) / (cos(40°)·cos(80°)) ] =

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