Question
Show that : $\sin ^{-1}\left(\frac{5}{13}\right)+\cos ^{-1}\left(\frac{3}{5}\right)=\tan ^{-1}\left(\frac{63}{16}\right)$
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| $x_i$ | -2 | -1 | 0 | 1 | 2 |
| $p_i$ | 0.1 | 0.2 | 0.4 | 0.2 | 0.1 |