Question

# What is mean by closed bracket and open bracket in inverse trigonometric functions and function please elaborate deeply with examples

Solution

## [] represents closed bracket lets take an example [0,π] this will include the points starting from 0 to π ,including 0 and π. ()represents open bracket take the same example (0,π) this will include the points starting from 0 to π ,but not 0 and this will include the π Inverse trigonometric functions(e.g., sin^-1(0.5) ) Interval Notation: You can represent intervals such as 0 < x < 2 and 4 ≤x ≤6 as (0, 2) U [4, 6] Notice you use open brackets ( ) for < or > and closed brackets [ ] for ≤and ≥

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