MCQ
Solution of $2\text{x}-\frac{3}{3\text{x}}-5\geq3$ is:
- A$\big[1,\frac{12}{7}\big]$
- ✓$\big(\frac{5}{3},\frac{12}{7}\big]$
- C$\big(-\infty,\frac{5}{3}\big)$
- D$\big[\frac{2}{7},\infty\big)$
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where $A = {\sin ^2}\alpha - \sin \alpha + \frac{1}{4}$
and $B = {\tan ^2}\alpha + \frac{2}{{\sqrt 3 }}\tan \alpha + \frac{1}{3}$ , then the number of value $(s)$ of $\alpha $ in $\left[ { - \frac{{3\pi }}{2},2\pi } \right]$ is - (where $sgnx$ denotes signum function of $x$ )