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If $x cos\theta - y sin\theta$ =$\sqrt{x^{2} + y^{2}}$ and $\frac{cos^{2}\theta}{a^{2}}+\frac{sin^{2}\theta}{b^{2}}$ = $\frac{1}{x^{2} + y^{2}}$ , then the correct relation is1). $\frac{x^{2}}{b^{2}} - \frac{y^{2}}{a^{2}}$ = 12). $\frac{x^{2}}{a^{2}} + \frac{y^{2}}{b^{2}}$ = 13). $\frac{x^{2}}{b^{2}} + \frac{y^{2}}{a^{2}}$ = 14). $\frac{x^{2}}{a^{2}} - \frac{y^{2}}{b^{2}}$ = 1 |
Answer» Right ANSWER for this QUESTION is $\frac{x^{2}}{a^{2}} + \frac{y^{2}}{b^{2}}$ = 1 |
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