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sin-1-3-8-13-1-sin-1-3-4-




Question Number 1113 by 123456 last updated on 15/Jun/15
sin^(−1) [((√3)/8)((√(13))−1)]+sin^(−1) ((√3)/4)=?
$$\mathrm{sin}^{−\mathrm{1}} \left[\frac{\sqrt{\mathrm{3}}}{\mathrm{8}}\left(\sqrt{\mathrm{13}}−\mathrm{1}\right)\right]+\mathrm{sin}^{−\mathrm{1}} \frac{\sqrt{\mathrm{3}}}{\mathrm{4}}=? \\ $$

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