I am thinking of an a number less than 20 greater than 10. the sum of the digits in the number is 6. what is the number? It’s fo
1 answer:
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Answer:
<em>The foci of the given ellipse = (0 ,-√5 ) and ( 0, √5 )</em>
Step-by-step explanation:
<u><em>Step(i)</em></u>:-
Given Ellipse 9 x² + 4 y² = 36
⇒
<u><em>Step(ii)</em></u>:-
The Major axis lies on y-axis
<em> Foci of the Formula C² = a² -b² = 9-4 =5</em>
<em> C = √5 </em>
The Foci is always lie on the major axis(longest) axis, spaced equally each side of the centre
<em>Given ellipse of the foci is lie on Y- axis</em>
<u><em>Final answer</em></u><em>:-</em>
<em>The foci of the given ellipse = (0 ,-√5 ) and ( 0, √5 )</em>