Vectors and are perpendicular

MATHEMATICS · Single correct · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

Vectors a=⟨2,k,−1⟩\mathbf{a}=\langle 2, k, -1\rangle and b=⟨3,1,4⟩\mathbf{b}=\langle 3, 1, 4\rangle are perpendicular. Determine kk. (a) −10-10 (b) 22 (c) −2-2 (d) −1-1

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