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September 21, 2014

September 21, 2014

Posted by **sol** on Sunday, March 28, 2010 at 10:33pm.

2sin^2X - 3sinX= -1

- trig -
**Reiny**, Sunday, March 28, 2010 at 10:36pm2 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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