Question

Can I do this?

a² = b² + c²
13² = 12 ² + c²
c² = 13² - 12²
c = sqtr(13 - 12)
c = sqrt(1)
c = 1

Answer 1

sqrt(1) = +-1

Answer 2

are you trying to find the missing leg given a leg of 12 and a hypotenuse of 13?

Answer 3

and you cant do what you did with the sqrt

Answer 4

c² = 13² - 12²
c = sqtr(13^2 - 12^2)

Answer 5

if so, then

a^2 + b^2 = c^2

12^2 + b^2 = 13^2

solve for b

Answer 6

\[c^{2} = a^{2} + b^{2}\] then \[c = \sqrt(a^{2}+b^{2}\]

Answer 7

Ok. I got. Thank you all.