Recent questions tagged inverse-trigonometry

1 votes
1 answer
1
The number of solutions of $\tan^{-1}(x-1) + \tan^{-1}(x) + \tan^{-1}(x+1) = \tan^{-1}(3x)$ is$1$$2$$3$$4$
To see more, click for the full list of questions or popular tags.