Mark the tick against the correct answer in the following:
Domain of sec-1 x is
To Find: The Domain of 
Here,the inverse function is given by y = 
The graph of the function y =  can be obtained from the graph of
 can be obtained from the graph of
Y = sec x by interchanging x and y axes.i.e, if (a,b) is a point on Y = sec x then (b,a) is the point on the function y = 
Below is the Graph of the domain of 

From the graph, it is clear that the domain of  is a set of all real numbers excluding -1 and 1 i.e, R – [-1,1]
 is a set of all real numbers excluding -1 and 1 i.e, R – [-1,1]