How do you simplify $sin(csc^-1(15/17))$ ?

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Answer 1 · 2016-08-30T14:38:27

Invalid expression.

For any a, $|csc a|>=1$ .

Here, it is $15/17<1$ .

So, the given expression $sin a = 1/csc a = 17/15 > 1$ is an invalid

expression.

How do you simplify sin(csc^-1(15/17))sin(csc^-1(15/17))?