Find the range of the function f(x)=cos-1x+cosec-1 - Maths - Inverse Trigonometric Functions

Question

Find the range of the function f(x)=cos-1x+cosec-1

Anuradha Sharma · Accepted Answer

Hi,
range of inverse trigonometric function is ,
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so range of the above function will be intersection of range of these two =0< x≤π2