## SantanaG 3 years ago Which of the following equations is used to find the value of c? pic attahced

1. SantanaG

2. Romero

you are missing a pic.

3. SantanaG

@Romero huh?

I don't think this is a complete question... if you don't have the values of a and b, then these all seem to be same question after all. All are equally solvable.

5. Romero

You don't have enough information.

Depending on values of a and b and whether you want a complex no. or not.. the answer varies

7. Romero

For now all of the choices are valid until we get more information

8. SantanaG

Thats all the information i was given. Its like saying which equation would we use to find the value of c if there were a and b .. idk im confused thats why I asked this question..

9. Romero

what subject are you learning right now?

10. SantanaG

pre calc sem.1

11. Shane_B

If it's pre-calc it's probably just asking about the Pythagorean Theorem and how to find the hypotenuse of a right triangle.\[a^2+b^2=c^2\]That's just my guess anyway...

12. SantanaG

http://www.mathwarehouse.com/ellipse/focus-of-ellipse.php i found this but it says a^2-b^2= c^2 an thats not an option.. :( so i think @Shane_B is right

13. Shane_B

I'm 99% sure it's c.

14. SantanaG

ok thanks !! :)