Multiple choice question VI — task. Mathematics State Board, Class 10.

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If \(sin \ \theta = cos \ \theta\), then \(2 tan^2 \ \theta + sin^2 \ \theta - 1\) is equal to

\(-\frac{3}{2}\)
\(\frac{2}{3}\)
\(-\frac{2}{3}\)
\(\frac{3}{2}\)

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