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Verified Answer :

Panoyin
  1. 2sin²(-2490) + tan(1410)
       2(0.25) - 0.6
       0.5 + 0.6
       1.1

    2. \(\frac{2sin(\alpha)cos(\beta) - sin(\alpha - \beta)}{cos(\alpha - \beta) - 2sin(\alpha)sin(b)} = tan(\alpha + \beta)\)
        \(\frac{2sin(\alpha)cos(\beta) - sin(\alpha)cos(\beta) + cos(\alpha)sin(\beta)}{cos(\alpha)cos(\beta) + sin(\alpha)sin(\beta) - sin(\alpha)sin(\beta)} = tan(\alpha + \beta)\)
        \(\frac{sin(\alpha)cos(\beta) + cos(\alpha)sin(\beta)}{cos(\alpha)cos(\beta) - sin(\alpha)sin(\beta)} = tan(\alpha + \beta)\)
        \(\frac{sin(\alpha + \beta)}{cos(\alpha + \beta)} = tan(\alpha + \beta)\)
        \(tan(\alpha + \beta) = tan(\alpha + \beta)\)

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