What is the range of y = sin θ ?

with solution will be deleted if not shown by moderators . and will make me cry

The range of a function is the set of all the possible function outputs. We know that sin theta varies between -1 and 1 if we draw a graph. According to the graph, the largest number that is an output of g is -1, and the smallest number is 1. Every number between them is also an output of g for some input.

=> Therefore, the range of g is [-1,1]. 

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