MCQ
$( - \sqrt 3 \,,\,\, - 1)\,$ ના ધૃવીય યામ ક્યાં છે?
- A$(2, \pi /6)$
- B$(2, 5\pi /6)$
- ✓$(2, -5\pi /6)$
- Dઆપેલ પૈકી એકપણ નહિ
$ \Rightarrow \,\,r\,\, = \,\,\sqrt {{{\left( { - \sqrt 3 } \right)}^2} + {{( - 1)}^2}} \,\, = \,\,2\,\,\, \Rightarrow \,\,r\,\, = \,\,2$
$2\cos \theta \,\, = \,\, - \sqrt 3 $ અને $\,2sin\theta \,\, = \,\, - 1\,\,\, \Rightarrow \,\,\theta \,\, = \,\, - \frac{{5\pi }}{6}$
તેથી ધૃવીય યામ $2\,,\,\, - \frac{{5\pi }}{6}$ થશે
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