Question

how do i find the missing side length using a^2+b^2=c^2 when the missing side length is b

Answer 1

a^2 + b^2 = c^2
subtract a^2 from both sides
b^2 = c^2 - a^2
take the square root of both sides
\[b = \sqrt{c^2 - a^2}\]

Answer 2

did you get the explanation @mariaha12 ?