4 (i)
Fig 2 4 (ii)
Rationalised 2023-24
 24
MATHEMATICS
2,
2
−π π





, then it is one-one and onto with its range as R Actually, tangent function
restricted to any of the intervals 
23 ,
2
− π −π





, 
2,
2
−π π





, 
2,3
2
π
π






 etc , is bijective
and its range is R