1- Calculate the area of the parallelogram whose adjacent sides are: ii = [6, 3, 2] and 5 = [1, 3, 1] 2. The points A[1,1,1],B[2, 0,3], and C[3, 3, 4]. Show that this triangle is a right-angle triangle. Given that these are math questions, I personally find solutions that are written on paper to be preferable. I need full steps for each question. I appreciate your great help. Useful Formulas axb = (a2b3 - a3b2, a3b1 - a1b3, a1b2 - a2b1) |dpt-plane = In . Pel Inl |dl1-12 = PIP2 'n| ni . n2 X n3 = 0 sin A sin B a b c2 = a2 + 62 - 2ab cos C W = F . d f ( x t h) - f(x) lim h