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OpenStudy (anonymous):
Solve by factoring the trig equation 2sin^2-sinx-1=0
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OpenStudy (cwrw238):
(2sinx + 1 )(sinx - 1 ) = 0 sin x = -1/2 or 1 x = 90, 210, 330 degrees ( in range 0 - 360)
OpenStudy (anonymous):
The answers need to be in terms of (0-2pi) I got 7pi/6, 2pi and 11pi/6, 2pi... Am i wrong?
OpenStudy (cwrw238):
90 degrees = pi/2, 210 degrees = 7pi/6, 330 degrees = 11pi/6 these are in radians
OpenStudy (anonymous):
Thank you! :)
OpenStudy (cwrw238):
yw
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OpenStudy (cwrw238):
2pi is incorrect
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