UNIT 6 TEST #4 - VECTORS SECTION -B - APPLICATION [A - 16 MARKS] This is an evaluation, make sure you are completing the work on your own. To earn full marks, you must justify your solution. Include the following as needed: Show diagram, define variables, state formula, theorem, equation or function used, Show substitutions and or steps in solving an equation, State restrictions, state concluding statement, Use correct notation. A mark of zero will be given for stating just the answer 1. Given the diagram below, determine the angle made by the diagonals AD and BC in the parallelogram ABCD. [4] 2. Given the points A (1, 2, -1), B(0, 3, -2), and C(-2,6,0). Determine the area of AABC, to the nearest one decimal squared units. [6] 3. A 12-kg monkey (9.8 N is exerted on 1 kg) is hanging from two branches. The angles that the monkey's arms make with the horizontal are 75 and 50. Determine the magnitude of tension in each arm, rounded to the nearest one decimal. (be sure to draw a well labelled equilibrium triangle) [6] horizontal