How do you graph inverse trigonometric functions?

1 Answer
Oct 29, 2014

Since the graphs of f(x)f(x) and f'(x) are symmetric about the line y=x, start with the graph of a trigonometric function with an appropriate restricted domain, then reflect it about the line y=x.

(Caution: Their domains must be restricted to an appropriate interval so that their inverses exist.)


Let us sketch the graph of y=sin^{-1}x.

The graph of y=sinx on [-pi/2, pi/2] looks like:

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By reflecting the graph above about the line y=x,

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The curve in purple is the graph of y=sin^{-1}x.

The graphs of other inverse trigonometric functions can be obtained similarly.


I hope that this was helpful.