Quantitative Aptitude Trigonometry

ఒక త్రిభుజంలో ఉంటే ∠B = 90° మరియు ∠ A = 60 ° అయితే Sin2A - Cos2A + Tan2A = ?

1
\(\frac{7}{2}\)
2
\(\frac{2}{5}\)
3
\(\frac{2}{3}\)
4
\(\frac{6}{5}\)

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