Question

Find the value of b. Express the answer as a simplified radical.

Answer 1

help :( plz

Answer 2

when working with right triangles, use the equation:
\[a^2+b^2=c^2\]
rearrange the equation so it is equal to b
\[b=\sqrt{c^2-a^2}\]

Answer 3

which ones a

Answer 4

you see how the two triangles are drawn the same above?
so, if we are looking at the right side of each triangle, we can see that one says '8' and the other says 'a'

or we could say
a=8

do you wanna try the same method and tell me what c=?