Question Number 136990 by EDWIN88 last updated on 28/Mar/21
Given a cube ABCD.EFGH where point Z is the midpoint of AE, point R on the edge of BC such that BR: CR = 3: 1, point U on the CG edge so that CG = 2GU. where x is the angle of the BR line to the BUZ plane. the value of sin x is equal to
