4. Let Ā = -(1+ 2 )î + 7j – 5k , B = xiî + (6 +0)j – 2k and ĉ = (8 + 2 )î – 2k , find the following: a. If 2 Ā– B = 4 C , find the value of x. b. Show whether the vectors à and Č are perpendicular.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.4: The Dot Product
Problem 32E
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4. Let Ā = -(1+ 2 )î + 7j – 5k , B = xî + (6 +0)f – 2k and Č = (8 + 2 )î – 2k ,
find the following:
a. If 2 Ā- B = 4 C , find the value of x.
b. Show whether the vectors A and Č are perpendicular.
Transcribed Image Text:4. Let Ā = -(1+ 2 )î + 7j – 5k , B = xî + (6 +0)f – 2k and Č = (8 + 2 )î – 2k , find the following: a. If 2 Ā- B = 4 C , find the value of x. b. Show whether the vectors A and Č are perpendicular.
3. A force F = (6+2 )î – (3 +0)j – R passes through the point B whose position
vector is b = î – (4 + 2 )f + R. Determine the vector moment, M, of F about the point
A with the position vector å = -î - 35 + (5 +0)R . Also find the angle in between.
Transcribed Image Text:3. A force F = (6+2 )î – (3 +0)j – R passes through the point B whose position vector is b = î – (4 + 2 )f + R. Determine the vector moment, M, of F about the point A with the position vector å = -î - 35 + (5 +0)R . Also find the angle in between.
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