If the magnitude of a vector is units and its direction cosines are

MATHEMATICS · Subjective · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

If the magnitude of a vector p\mathbf{p} is kk units and its direction cosines are 13,  13,  13\dfrac{1}{\sqrt{3}},\;\dfrac{1}{\sqrt{3}},\;\dfrac{1}{\sqrt{3}}, express p\mathbf{p} in component form in terms of kk.

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