acc to horizontal line test If an imaginary horozontal line intersept a function at two or more points then the function is not invertable 
Well then wt about sine function we know that is invertable.

Asked by Hemant | 4th May, 2014, 09:19: PM

Expert Answer:

in case of sine function , we restrict the domain of the function to [-pi/2, pi/2], in which it is one- one onto means invertible. 

Answered by Avinash Soni | 4th May, 2014, 10:03: PM

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