(b) or B1ft [1] (c) M1 Applies dot product formula between M1 their and their Correct A1 cso proof [3] or , with M1 (d) either or , or a multiple of . Correct vector equation. A1 ft [2] Either M1 or At one set of (e) A1 ft coordinates are correct. Both sets of coordinates are A1 ft correct. [3] (f) M1 or A1 oe or or awrt 4.9 or equivalent dM1 A1 cao [4] 15 8. (f) Helpful Diagram!
(b) or B1ft [1] (c) M1 Applies dot product formula between their and their M1 Correct proof A1 cso [3] (d) or , with either or , or a multiple of . M1 Correct vector equation. A1 ft [2] (e) Either or M1 At one set of coordinates are correct. A1 ft Both sets of coordinates are correct. A1 ft [3] (f) M1 or or or awrt 4.9 or equivalent A1 oe dM1 A1 cao [4] 15 8. (f) Helpful Diagram!
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