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OpenStudy (anonymous):
Help Solving a Quadratic Trig equation please!
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OpenStudy (anonymous):
Solve for x in the interval 0 to 2pi\[\cos ^2x+\left(\frac{1-\sqrt{2}}{2}\right)\cos x-\frac{\sqrt{2}}{4}=0\]
OpenStudy (anonymous):
Pretend the cos(x) is some variable "Z" . Apply the quadratic formula.
OpenStudy (anonymous):
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