The vectors a, b and c are such that 2a – b+c= 0. If a = 4i – j+k and b = i- 2k , find a unit vector in the direction of c. (a) (1)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.3: Vectors
Problem 34E
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Please help me with the full solution . Answers can be found below the questions :)
(a)
The vectors a, b and c are such that 2a – b+c= 0. If a = 4i – j+k and
b = i- 2k , find a unit vector in the direction of c.
Find a vector a such that a is parallel to the vector 8i+j+4k and is equal in
magnitude to the vector i- 2j+ 2k .
(b)
(c)
Find the position vector of P if OP is of length 5 units and is in the direction
2i – j+4k .
8.
1
(b)
3
4
8.
[(a)
2
69
or
3
4
(c)
V21
Transcribed Image Text:(a) The vectors a, b and c are such that 2a – b+c= 0. If a = 4i – j+k and b = i- 2k , find a unit vector in the direction of c. Find a vector a such that a is parallel to the vector 8i+j+4k and is equal in magnitude to the vector i- 2j+ 2k . (b) (c) Find the position vector of P if OP is of length 5 units and is in the direction 2i – j+4k . 8. 1 (b) 3 4 8. [(a) 2 69 or 3 4 (c) V21
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