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Prove that for all values of θ |(sinθ, cosθ, sin2θ), (sin(θ + 2π/3), cos(θ + 2π/3), sin(2θ - 4π/3)),

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Prove that for all values of θ

|(sinθ, cosθ, sin2θ), (sin(θ + 2π/3), cos(θ + 2π/3), sin(2θ - 4π/3)), (sin(θ - 2π/3) cos(θ - 2π/3), sin(2θ - 4π/3))| = 0

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= 0 (since, R1 and R2 are proportional)

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