Answer to Question #9943 in Trigonometry for Eliana Hernandez

Question #9943
solve each on the interval (0, 2pi)

1. 2cos^2(x)-3cos(x)+1=0
2. 2sin^2(x)+cos(x)=1
3. cos(x)=-0.8092
1
Expert's answer
2012-05-24T07:25:49-0400
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