Simplify and choose the equivalent expressions — task. Mathematics CBSE, Class 10.

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1. \(\tan^2 θ - \sin^2 θ\) \(=\)

\(\tan^2 θ + \sin^2 θ\)
\(\tan θ \sin θ\)
\(\tan^2 θ \sin^2 θ\)

2. \(\tan^4 θ + \tan^2 θ\) \(=\)

\(\tan^4 θ + \sec^2 θ\)
\(\sec^4 θ - \sec^2 θ\)
\(\sec^4 θ + \sec^2 θ\)

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