Question: fsolve question

I am trying to find the zeros of the sine function below when i do maple just returnes 0.

I know this function should have several zeros ovet ther interval (-5,5), it an fairly shouls that this is withint maple's capability i think i am possily missing a peramiter or using the wrong command.

 

I am using the command below any suggetions are appricated

 

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