Please Help I'm so confused with these last three questions
sec^2Ø-4secØ=5 solve for Ø over [0°, 360°)
sin^2(2x)-1=0 solve for x over [0, 2pi)
sin^2x+cos^2x+cos x=1 solve for x over [0, 2pi)
Thank you for any help, it is very appreciated!
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