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

Aug 30, 2016

Invalid expression.

Explanation:

For any a, $| \csc a | \ge 1$.

Here, it is $\frac{15}{17} < 1$.

So, the given expression $\sin a = \frac{1}{\csc} a = \frac{17}{15} > 1$ is an invalid

expression.