What is the foci of graph

Algebra
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What are the foci of the graph y^2/110-x^2/34=1?     

May 16th, 2015

the standard equation is y^2/a^2 - x^2/b^2 =1

so a^2=110 and b^2=34

a=sqrt(110) and b=sqrt(34)

The equation c2a2 = b2 tells me that c^2=34+110=144

c=sqrt(144)=12

the foci are at (0, –c) and (0, c)

we have (0, -12) and (0, 12)

May 16th, 2015

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May 16th, 2015
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May 16th, 2015
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