17 degrees is an idiotic response, and I believe it's a deliberate effort to sabotage students' efforts. Actually, I believe that about most of the one- or two-word responses that don't describe the method used to obtain it. I believe the objective is to cause the students to waste time doubting themselves because they can't figure out how the poster got that answer, or worse, to just copy the answer to their homework and earn a failing grade; that is, if schools even still give failing grades these days.
.
