if sec theta +tan theta=1, then find the value of sec theta
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1-tan theta.............
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sec theta = 1 - tan theta
sec theta -1 = - √ sec^2 theta -1
sec^2 theta + 1 - 2 sec the ta = - sec^2 theta +1
2 sec^2 theta - 2 sec theta = 0
sec ( sec -1) = 0
sec= 0,1
sec theta -1 = - √ sec^2 theta -1
sec^2 theta + 1 - 2 sec the ta = - sec^2 theta +1
2 sec^2 theta - 2 sec theta = 0
sec ( sec -1) = 0
sec= 0,1
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