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Question
Domain and Rariges of cos–1 is:-
Options
`[-1, 1], [(-pi)/2, pi/2]`
`[-1, 1], [0, pi]`
`R, ((-pi)/2, pi/2)`
`R, (0, pi)`
MCQ
Solution
`[-1, 1], [0, pi]`
Explanation:
sin–1 : `[-1, 1] -> [-pi/2, pi/2]`
cos–1 : `[-1, 1] -> [0, pi]`
cosec–1 : `R - (-1, 1) -> [- pi/2, pi/2] - |0|`
sec–1 : `R - (-1, 1) -> [0, pi] - |pi/2|`
tan–1 : `R -> (- pi/2, pi/2)`
cot–1 : `R - (0, pi)`
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