Q.1 If a = 3i - j-4k, b= -2i + 4j- 3k and c =i+ 2j-k. - Find unit vector parallel to 3 a -2 b +4 c .

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
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If a 3i-j-4k, b= -2i + 4j-3k and c i+ 2j -k.
Find unit vector parallel to 3 a -2 b +4 c.
Q.2 Find the vector whose magnitude is 5 and which is in the direction
of the vector 4i- 3j + k.
For what value of m, the vector 4i + 2j - 3k and mi -j+ 3k
have same magnitude?
Given the points A (1, 2, -1), B (-3, 1, 2) and C (0, -4, 3)
(i) find AB, BC, AC
Q.5 Find the lengths of the sides of a triangle, whose vertices are
A (2, 4, -1), B (4, 5, 1), C (3, 6, -3) and show that the
triangle is right angled.
Q.1
Q.3
Q.4
(ii) Show that AB+ BC AC
%3D
Q.6 If vectors 3i + j - k and 2 i - 4j + 4k are parallel, find the value
of A.
27
Q.7
Show that the vectors 4i - 6j + 9k and-6i + 9j -k are parallel.
Q.8
Find real numbers x, y and z such that
(a)
(b)
7xi + (y-3)j + 6k = 10i + 8j - 3zk
(x + 4)i + (y-5)j+(z-1)k 0
Transcribed Image Text:If a 3i-j-4k, b= -2i + 4j-3k and c i+ 2j -k. Find unit vector parallel to 3 a -2 b +4 c. Q.2 Find the vector whose magnitude is 5 and which is in the direction of the vector 4i- 3j + k. For what value of m, the vector 4i + 2j - 3k and mi -j+ 3k have same magnitude? Given the points A (1, 2, -1), B (-3, 1, 2) and C (0, -4, 3) (i) find AB, BC, AC Q.5 Find the lengths of the sides of a triangle, whose vertices are A (2, 4, -1), B (4, 5, 1), C (3, 6, -3) and show that the triangle is right angled. Q.1 Q.3 Q.4 (ii) Show that AB+ BC AC %3D Q.6 If vectors 3i + j - k and 2 i - 4j + 4k are parallel, find the value of A. 27 Q.7 Show that the vectors 4i - 6j + 9k and-6i + 9j -k are parallel. Q.8 Find real numbers x, y and z such that (a) (b) 7xi + (y-3)j + 6k = 10i + 8j - 3zk (x + 4)i + (y-5)j+(z-1)k 0
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