Ryabushko A.P. IDZ 3.1 option 6

№1.6. Given four points A1 (0, 7, 1); A2 (2; 1; 5); A3 (1; 6; 3); A4 (3; -9 8). Be the equation: a) plane A1A2A3; b) direct A1A2; c) direct A4M; perpendicular to the plane of A1A2A3; g) direct A3N; parallel line A1A2; d) a plane passing through A4; perpendicular to the line A1A2. Calculate: e) The sine of the angle between the line and the plane A1A4 A1A2A3; g) the cosine of the angle between the coordinate plane and the plane Oxy A1A2A3;
№2.6. Find the equation of the plane; passing through the point A (2, 5, -1) and B (-3, 1, 3) parallel to the axis Oy.
№3.6. What value .... direct; parallel to the line .....