Question
Determine each limit (answer as appropriate, with a number, $\infty,-\infty$ or does not exist).$$\lim _{x \rightarrow \infty} \sin \left(\tan ^{-1} x\right)$$
Step 1
The function $\tan^{-1}x$ is the inverse of the tangent function, which means it gives the angle whose tangent is $x$. As $x$ approaches infinity, $\tan^{-1}x$ approaches $\frac{\pi}{2}$. Show more…
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