Tan^2theta -3 sec theta +3 = 0
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sec theta = 1 or 2
tan^2 theta - 3 sec theta + 3 = 0
sec^2 - 1 -3sec theta + 3 =0
sec^2theta -2sec theta - sec theta + 2 =0
sec theta(sec theta - 2)-1(sec theta -2)= 0
sec theta = 2
sec theta=1
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