Question and Answers Forum

All Questions      Topic List

Coordinate Geometry Questions

Previous in All Question      Next in All Question      

Previous in Coordinate Geometry      Next in Coordinate Geometry      

Question Number 33051 by Tinkutara last updated on 09/Apr/18

Commented by MJS last updated on 09/Apr/18

$${\mathrm{what}}^{\prime }\mathrm{s}\mathrm{the}\mathrm{eccentric}\mathrm{angle}?$$$$\mathrm{is}\mathrm{it}\mathrm{\angle }{F}_1{AF}_2?$$

Commented by Tinkutara last updated on 10/Apr/18

$$Whatare{F}_{1}and{F}_2?$$

Commented by MJS last updated on 10/Apr/18

$$\mathrm{the}\mathrm{focuses}$$$$x^2+9y^2=25$$$$\frac{x^2}{25}+\frac{y^2}{25/9}=1$$$$ellipsewitha=5;b=\frac{5}{3}$$$$e=\sqrt{a^2-b^2}=\frac{10\sqrt{2}}{3}$$$$F_1=\left(\begin{array}{c}-\frac{10\sqrt{2}}{3}\\ 0\end{array}\right)$$$$F_2=\left(\begin{array}{c}\frac{10\sqrt{2}}{3}\\ 0\end{array}\right)$$$$\mathrm{so}\mathrm{my}\mathrm{question}\mathrm{is}:\mathrm{is}\mathrm{the}\mathrm{eccentric}$$$$\mathrm{angle}\mathrm{the}\mathrm{angle}\mathrm{between}\mathrm{the}\mathrm{lines}$$$$F_{1}A\mathrm{and}{F}_{2}A?$$$$\mathrm{because}\mathrm{in}\mathrm{this}\mathrm{case}\mathrm{this}\mathrm{angle}$$$$\mathrm{is}\mathrm{equal}\mathrm{to}\mathrm{the}\mathrm{angle}\mathrm{between}$$$$F_{1}B\mathrm{and}{F}_{2}B$$

Terms of Service

Privacy Policy

Contact: info@tinkutara.com