SOLUTION: To find b the equation b= c 2 − a 2 can be used but the value of c must be determined. Since c is the distance from the foci to the center, take either foci and determine the d

Question 1189861: To find b the equation b= c 2 − a 2 can be used but the value of c must be determined. Since c is the
distance from the foci to the center, take either foci and determine the distance to the center. Then solve for b.
Foci (-3, 8): c=| 2−( −3 ) |=| 5 |=5
Foci (7, 8): c=| 2− 7 |=| −5 |=5
c = 5
b= c 2 − a 2
b= 5 2 − 3 2 = 16 =4
b = 4
Answer by ikleyn(52800)   (Show Source): You can put this solution on YOUR website!
.

What is written in this post, is CORRECT

( except of   b = c^2 - a^2   in the first line, where should be   b = , instead )

--------------

In the future, write   a^2   if you want to denote the square of "a".

Also, if you submit such a post, write somewhere at the beginning

        " check please whether my solution is correct "

in order for to give an idea to the tutors what you want from them.

Happy learning from this forum ( ! )

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