2. If a=2i+4j-5k and b=3i-2j+6k determine: (i) a b (ii) a+b (iii) a X b (iv) the angle between a and b.

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2. If a=2i+4j-5k and b=3i-2j+6k determine:
(i) a b
(ii) a+b
(iii) a X b
(iv) the angle between a and b.
Transcribed Image Text:2. If a=2i+4j-5k and b=3i-2j+6k determine: (i) a b (ii) a+b (iii) a X b (iv) the angle between a and b.
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