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यदि दीर्घवृत (x^(2))/(3)+(y^(2))/(2)=1 क...

यदि दीर्घवृत `(x^(2))/(3)+(y^(2))/(2)=1` के बिन्दु `P(theta)` पर अभिलम्ब इसे पुनः बिन्दु `Q(2theta)` पर मिलता है, तो `cos theta` का मान ज्ञात कीजिए |

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The correct Answer is:
`-1`
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