Calculating Vector & Scalar Projection of a & b

Thread starter menal
Start date Apr 18, 2011
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Projection Scalar Vector

Apr 18, 2011

menal

Homework Statement

i have to find the scalar and vector projection of a=i-j+k and b=2i-j-2k
and i got:
Vector proj = (1/3)(i-j+k) = i/3 + j/3 + k/3

scalar proj = (1/9)(2i-j-2k) = 2i/9 - j/9 - 2k/9
is this correct?

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Apr 18, 2011

menal

also, the angle that b makes with each of the coordinates would be 79 degrees?

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