Stumped by Definite Integral: $\int_1^2 \frac{\sin(x)}{\sqrt{x^2-1}} \, dx$

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The discussion revolves around solving the definite integral $\int_1^2 \frac{\sin(x)}{\sqrt{x^2-1}} \, dx$, which poses significant challenges without technological assistance. The user attempted a substitution with $y=\arccsc(x)$, transforming the integral into $\int_{\pi/6}^{\pi/2}\sin(\csc(y)) \, dy$, but found this new form equally complex. The numerical approximation of the integral is approximately 0.9597, highlighting its non-trivial nature. The consensus is that arriving at an analytical solution without technology is implausible.

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Was asked to solve this definite integral in a tech free test. Not sure how to go about it.

$$\int_1^2 \frac{\sin(x)}{\sqrt{x^2-1}} \, dx.$$

I know here is a relationship between inverse sin and the sqrt function but with just sin x?
 
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Well, Mathematica balks at evaluating it, so it seems to me it is a rather non-trivial integral. I tried the substitution $y=\arccsc(x)$, which changes the integral to
$$\int_{\pi/6}^{\pi/2}\sin(\csc(y)) \, dy.$$
Problem is, this new integral is no easier than the old one. The numerical value is about $0.9597$. If you're not allowed any technology, I don't see how you could arrive at any solution.
 

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