MCQ
${\tan ^{ - 1}}\left[ {\frac{{\cos x}}{{1 + \sin x}}} \right] = $
- ✓$\frac{\pi }{4} - \frac{x}{2}$
- B$\frac{\pi }{4} + \frac{x}{2}$
- C$\frac{x}{2}$
- D$\frac{\pi }{4} - x$
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$\overrightarrow{\mathrm{a}} \times\{(\overrightarrow{\mathrm{r}}-\overrightarrow{\mathrm{b}}) \times \overrightarrow{\mathrm{a}}\}+\overrightarrow{\mathrm{b}} \times\{(\overrightarrow{\mathrm{r}}-\overrightarrow{\mathrm{c}}) \times \overrightarrow{\mathrm{b}}\}+\overrightarrow{\mathrm{c}} \times\{(\overrightarrow{\mathrm{r}}-\overrightarrow{\mathrm{a}}) \times \overrightarrow{\mathrm{c}}\}=\overrightarrow{0}$
નું સમાધાન કરે છે તો $\overrightarrow{\mathrm{r}}$ મેળવો.