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junior college 1 | H2 Maths
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I'm confused on which multiplication to use scaler or vector???
Date Posted: 5 years ago
Views: 562
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The vector projection of 3a - b onto a - 3b is the one I labelled in red on the left hand side.
But the length of that projection is a scalar (length is a scalar, independent of the direction). So using the scalar projection formula is sufficient for this question.
But the length of that projection is a scalar (length is a scalar, independent of the direction). So using the scalar projection formula is sufficient for this question.
Date Posted:
5 years ago
I mean the one I labelled in red without the arrow. The one which I wrote 'length of projection'.
Also, cos 60 = half.
Also, cos 60 = half.
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I have no idea how to calculate modulus part so I am guessing here. I only know how to do first part. Sorry.
Date Posted:
5 years ago
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