trig

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solve the equation
2sin^2X - 3sinX= -1

  • trig -

    2 sin^2 x - 3sinx + 1 = 0
    (2sinx - 1)(sinx -1) = 0
    sinx = 1/2 or sinx = 1

    x = 30 degrees or 150 degrees or x = 90 degrees

    in radians x = π/6, 5π/6, π/2

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