Domain of cos^-1 ⁡ [x ] is, where [ ] denotes a greatest integer function

Question

Accepted Answer

Correct answer: D. (d) We know that, 0 cos^-1 (x ) ⇒-1 (x ) 1 ⇒ -1 x<2 ⇒x ∈ [-1 ,2 )

$Domain of cos^{- 1} [x] is, where [ ] denotes a greatest integer function$