cos A + sec A =2,
then find the value of cos^2A+ sec^2A
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cosA + secA = 2
(cosA + secA)^2 = 2^2
cos^2A + sec^2A + 2 cosA secA = 4
cos^2A + sec^2A + 2 = 4
cos^2A + sec^2A = 2
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