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Let Δ1 = |(x, sinθ, cosθ), (-sinθ, x,1)(cosθ,1,x)| and Δ2 = |(x,sin2θ,cos 2θ),(-sin 2θ,x,1)(cos 2θ,1 ,x)|,

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 Let Δ1 = |(x, sinθ, cosθ), (-sinθ, x,1)(cosθ,1,x)| and Δ2 = |(x,sin2θ,cos 2θ),(-sin 2θ,x,1)(cos 2θ,1 ,x)|, then which of following is/are true ?

(1)  Δ1 - Δ2 =  x2

(2)  Δ1 + Δ2 =  2x3

(3)  Δ1 + Δ2 =  -x3

(4)  Δ1 - Δ2 =  2x3 

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Correct option (2)  Δ1 + Δ2 =  2x3

Explanation:

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