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junior college 1 | H2 Maths
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junior college 1 chevron_right H2 Maths chevron_right Singapore

how do you find (ii) ? thanks

Date Posted: 7 months ago
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Eric Nicholas K
Eric Nicholas K's answer
3854 answers (Tutor Details)
I forgot much of my vectors already but I have tried my best here; the geometrical interpretation is something to do with the projection length of one vector onto another.

Recall that i.i = j.j = k.k = 1 and i.j = i.k = j.k = j.i = k.i = j.k = 0.