Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter8: Applications Of Trigonometry

Section8.4: The Dot Product

Problem 6E

Related questions

Question

a•b=3 a•c=7

a•(3b-c)= ?

My work so far:

a•(3b-c) = a•3b - a•c = a•3b - 7

I don't know how to get 3b

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