harpazo1965 harpazo1965

22-08-2020
Mathematics

contestada

Vector a = 4i + 5j

Vector b = 3i + 6j

Find the dot product.

Respuesta :

MathPhys MathPhys

22-08-2020

Step-by-step explanation:

a · b = (4)(3) + (5)(6)

a · b = 12 + 30

a · b = 42

Answer Link

zubam2002 zubam2002

25-08-2020

Answer:

42

Step-by-step explanation:

a*b = 4*3 + 5*6 = 12 + 30 ( where i*i = j*j = 1)

∴ a*b = 42

Answer Link

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