﻿ Find a ⋅ b. a = 6i - 6j, b = 4i + 2j - AssignmentGrade.com

# Find a ⋅ b. a = 6i - 6j, b = 4i + 2j

QUESTION POSTED AT 01/06/2020 - 03:54 PM

It is given that a ⋅ b. a = 6i - 6j, b = 4i + 2j

we know that i is the unit vector along x axis

we also know that j is the unit vector along y axis

here a is given equal to 6i - 6j

here b is given 4i +2j

we have to find the dot product of a and b

therefore dot product of a and b i.e a.b = (6i - 6j).(4i + 2j)=

24 + 0 -12 - 0 = 12

therefore dot product of a and b is a.b = 12

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