builder, welcome to MHF.
Since the pitch is very small, you can write tanθ = h/L = θ.
Convert 1 degree to radian and substitute in the above equation to find h.
So, if length of horizontal side is 13.35m and pitch of roof is 1 degree what is the height of vertical side?
Sorry for lame question in such a comprehensive forum! Am a builder and having a brain blank.
Thanks for help.