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posted by sol on Sunday, March 28, 2010 at 10:33pm.
solve the equation 2sin^2X - 3sinX= -1
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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