An architect was asked to build a special staircase in a new building. The staircase
will be built like a helix that rotates around the outside of a cylindrical waterfall.
Because it is a helix, the beginning of the staircase begins at a point directly above
the position where the staircase ends at the bottom base of the column. Describe
how to find the length of the staircase if the cylinder it surrounds is 30 m in height ar
has a radius of 12 m.

i dont know sorry

step-by-step explanation:

< xcy ≅ < xby

step-by-step explanation:

in δcax and δbax,

so, δcax ≅ δbax (side-angle-side or sas)

since δcax ≅ δbax, we can conclude < acx ≅ < abx

in δacy and δaby,

so, δacy ≅ δaby (side-angle-side or sas)

since δacy ≅ δaby, we can conclude < acy ≅ < aby

now,

< acy ≅ < aby

=> < acx + < xcy ≅ < abx + < xby

=> < acx + < xcy ≅ < acx + < xby   (since < acx ≅ < abx already proved above)

subtracting < acx from both sides, we get

< acx + < xcy -< acx ≅ < acx + < xby -< acx

cancelling out < acx and -< acx from both sides, we get

< xcy ≅ < xby (proved)