The direction angles of a nonzero vector a are the angles a, ß, and y (in the interval [0, m]) that a makes with the positive x-, y- and z- axes, respectively. The cosines of these direction angles, cos(a), cos(B) and cos(y), are called the direction cosines of the vector a. For a vector a = (a, b, c), the direction cosines are given by cos (8) cos(a)= cos(B)- Find the direction cosines and direction angles of the vector (5, 1, 3). (Give the direction angles correct to the nearest degree.) ▷ lal lil cos(y) - a= B= Y= D cos(a) 0 lal lal lil cos(y) = a k la |k| lal

Calculus: Early Transcendentals
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Author:James Stewart
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The direction angles of a nonzero vector a are the angles a, ß, and y (in the interval [0, π]) that a makes with the positive x-, y- and z- axes, respectively. The cosines of these direction angles,
cos(a), cos(B) and cos(y), are called the direction cosines of the vector a. For a vector a = (a, b, c), the direction cosines are given by
cos(a) =
cos(B) =
cos(y) =
cos(a) = a.i
lal lil
Find the direction cosines and direction angles of the vector (5, 1, 3). (Give the direction angles correct to the nearest degree.)
a =
B =
Y=
a
lal
0
cos(B) =
_b
la ljl Tal
cos(y) = _a-k
la k
C
lal
Transcribed Image Text:The direction angles of a nonzero vector a are the angles a, ß, and y (in the interval [0, π]) that a makes with the positive x-, y- and z- axes, respectively. The cosines of these direction angles, cos(a), cos(B) and cos(y), are called the direction cosines of the vector a. For a vector a = (a, b, c), the direction cosines are given by cos(a) = cos(B) = cos(y) = cos(a) = a.i lal lil Find the direction cosines and direction angles of the vector (5, 1, 3). (Give the direction angles correct to the nearest degree.) a = B = Y= a lal 0 cos(B) = _b la ljl Tal cos(y) = _a-k la k C lal
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