If x/cosθ=y/cos(θ-2 π/3)=z/cos(θ+2 π/3), then x+y+z is equal to (1) 1 (2) 0 (3) -1 (4) none of th...

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If x/cosθ=y/cos(θ-2 π/3)=z/cos(θ+2 π/3), then x+y+z is equal to
(1) 1
(2) 0
(3) -1
(4) none of these

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