Check sibling questions

Domain is what goes in,

Range is what comes out


For inverse functions

x goes in, and angle comes out.

Domain and Range of Inverse Trigonometry Functions.jpg

So, domain is all possible values of x

and range is all possible values of angles


Domain and Range of Trigonometry Functions




sin -1

[–1, 1]


cos -1

[–1, 1]


tan -1



cosec -1

R – (–1, 1)

[-π/2,π/2] - {0}

sec -1

R – (–1, 1)


cot -1




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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.