# SOLUTION: How would I find the domain of y = root(tanx) ? How would I find the domain of y = x / cos(x) ?

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 Question 638589: How would I find the domain of y = root(tanx) ? How would I find the domain of y = x / cos(x) ?Answer by stanbon(57219)   (Show Source): You can put this solution on YOUR website!How would I find the domain of y = root(tanx) ? -------------- tan(x) must not be negative. Domain: All Real Numbers, x, where x is [0,pi/2)U[pi,(3/2)pi) etc. -------------------------------------------------------- How would I find the domain of y = x / cos(x) ? cos(x) cannot be zero Domain: All Real Numbers except x = pi/2,(3/2)pi,etc. ============================================= Cheers, Stan H.