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13. In the following cases, determine whether the given planes are parallel orperpendicular, and in case they are neither, find the angles between them.(a) 7x + 5y + 6z +30 0 and 3x - y -10z 4-0(b) 2r + y 3z-2-0 and x - 2y +5 0(c) 2r- 2y +4z +5-0 and 3x - 3y 6z-1 0(d) 2r - y 3z-10 and 2x -y +3z+3-0(e) 4x + 8y +z- 8-0 and y +z- 4 0 |
| Answer» 13. In the following cases, determine whether the given planes are parallel orperpendicular, and in case they are neither, find the angles between them.(a) 7x + 5y + 6z +30 0 and 3x - y -10z 4-0(b) 2r + y 3z-2-0 and x - 2y +5 0(c) 2r- 2y +4z +5-0 and 3x - 3y 6z-1 0(d) 2r - y 3z-10 and 2x -y +3z+3-0(e) 4x + 8y +z- 8-0 and y +z- 4 0 | |