[Urgent] What is the angle of the the mirror? 1. The problem statement, all variables and given/known data There is an intriguing aspect to Vermerr's "The Music" painting. If you notice, in the mirror there is a reflection of the woman and above that there is a reflection of what appears to be the feet of an easel. Upon closer inspection you can see the base of the back wall reflected in the mirror. The intersection of the back wal and floor in the mirror is marked on the outline in the image. We can use this as a second method to determine the length of the room. But the question is, what is the angle from the wall at which the mirror hangs? Picture given: http://www.freeimagehosting.net/image.php?2e866c251b.jpg Side view of the room (for measuring the angle): http://g.imageshack.us/img505/musiclesson2xx1.jpg/1/ [Broken] 2. Relevant equations Don't Know 3. The attempt at a solution I've calculated the length of the room: 6.6 m but it might be wrong, still just base it on 6.6. meters. This is already the last part, so help if you can! Thanks!