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OpenStudy (anonymous):
Help please! 4(cos x)^2=2 I know there is fou answer which is x= +-45 degrees + n*360 x=+- 135 degrees + n*360 but I cant figure out how to do it
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OpenStudy (anonymous):
divide by 4 take the square root don't forget the \(\pm\)
OpenStudy (anonymous):
|dw:1378990190239:dw|
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