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Trigonometry: Transformations: Example 5
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Trigonometry: Transformations: Example 5
If x Cos θ = y Cos (θ + 2π/3) = z Cos (θ + 4π/3), then prove that xy + yz + zx = 0.
If x Cos θ = y Cos (θ + 2π/3) = z Cos (θ + 4π/3), then prove that xy + yz + zx = 0.
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