Exam 10: Analytic Geometry in Three Dimensions

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Find the vector z\mathbf { z } , given u=5,8,2,v=6,2,9\mathbf { u } = \langle 5 , - 8,2 \rangle , \mathbf { v } = \langle - 6 , - 2,9 \rangle , and w=13,34,10\mathbf { w } = \langle - 13,34 , - 10 \rangle . 3u2v2z=w- 3 \mathbf { u } - 2 \mathbf { v } - 2 \mathbf { z } = \mathbf { w }

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Find the area of the parallelogram that has the vectors as adjacent sides. u=4,2,5,v=4,1,2\mathbf { u } = \langle 4,2 , - 5 \rangle , \mathbf { v } = \langle - 4,1,2 \rangle

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Find the general form of the equation of the plane passing through the three points. [Be sure to reduce the coefficients in your answer to lowest terms by dividing out any common factor.] (1,4,2),(6,5,4),(1,2,6)( - 1 , - 4 , - 2 ) , ( - 6,5,4 ) , ( 1 , - 2 , - 6 )

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Find the dot product of u\mathbf { u } and v\mathbf { v } . u=9i5j9k,v=2i+6j+5k\mathbf { u } = 9 \mathbf { i } - 5 \mathbf { j } - 9 \mathbf { k } , \mathbf { v } = - 2 \mathbf { i } + 6 \mathbf { j } + 5 \mathbf { k }

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Find the angle between the two planes in degrees. Round to a tenth of a degree. x+3y+6z=4 x-6y-z=4

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The weight of a crate is 300 newtons. Find the tension in each of the supporting cables shown in the figure. The coordinates of the points A,B,CA , B , C , and DD are given below the figure. Round to the nearest newton.  The weight of a crate is 300 newtons. Find the tension in each of the supporting cables shown in the figure. The coordinates of the points  A , B , C , and  D  are given below the figure. Round to the nearest newton.    [Figure not necessarily to scale.] point  A = ( 0,0 , - 130 ) , point  B = ( 90,0,0 ) , point  C = ( - 40,40,0 ) , point  D = ( 0 , - 180,0 ) [Figure not necessarily to scale.] point A=(0,0,130)A = ( 0,0 , - 130 ) , point B=(90,0,0)B = ( 90,0,0 ) , point C=(40,40,0)C = ( - 40,40,0 ) , point D=(0,180,0)D = ( 0 , - 180,0 )

(Multiple Choice)
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Determine whether u\mathbf { u } and v\mathbf { v } are parallel, orthogonal, or neither. u=5,6,8,v=10,12,16\mathbf { u } = \langle 5,6 , - 8 \rangle , \mathbf { v } = \langle 10,12 , - 16 \rangle

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Find a set of parametric equations for the line that passes through the given points. Show all your work. (9,8,2),(3,6,4)( 9,8 , - 2 ) , ( - 3 , - 6,4 )

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Find the coordinates of the point located three units in front of the yzy z -plane, eight units to the right of the xzx z -plane, and five units above the xyx y -plane.

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Find the torque on the crankshaft V\mathbf { V } using the data shown in the figure. Round to the nearest tenth of a foot-pound.  Find the torque on the crankshaft  \mathbf { V }  using the data shown in the figure. Round to the nearest tenth of a foot-pound.     \begin{array} { l }  \| \mathbf { V } \| = 1.6 \mathrm { ft } \\ \| \mathbf { F } \| = 20 \mathrm { lb } \\ \theta = 60 ^ { \circ } \end{array} \|\|=1.6 \|\|=20 \theta=6

(Multiple Choice)
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Find the general form of the equation of the plane with the given characteristics. The plane passes through the points (4,4,3)( - 4,4,3 ) and (2,7,7)( 2,7 , - 7 ) and is perpendicular to the plane 2x+3y+3z=12 x + 3 y + 3 z = 1 .

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Find a set of symmetric equations of the line that passes through the points (5,0,5)( 5,0,5 ) and (7,8,6)( 7,8 , - 6 ) .

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Determine the values of cc such that cu=2\| c \mathbf { u } \| = 2 , where u=3i4j+2k\mathbf { u } = 3 \mathbf { i } - 4 \mathbf { j } + 2 \mathbf { k } .

(Multiple Choice)
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Find the distance between the points. (1,9,3),(5,6,8)( 1,9,3 ) , ( 5 , - 6,8 )

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Find the area of the parallelogram that has the vectors as adjacent sides. u=2i+j+k,v=5i5j+5k\mathbf { u } = 2 \mathbf { i } + \mathbf { j } + \mathbf { k } , \mathbf { v } = 5 \mathbf { i } - 5 \mathbf { j } + 5 \mathbf { k }

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Find the lengths of the sides of the right triangle whose vertices are located at the given points. Show that these lengths satisfy the Pythagorean Theorem. Show all of your work. (8,4,4),(9,5,3),(3,6,0)( 8 , - 4,4 ) , ( 9,5,3 ) , ( - 3,6,0 )

(Essay)
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Find the distance between the point and the plane. (-2,-1,-4) -3x-2y-z=1

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Find the lengths of the sides of the right triangle whose vertices are located at the given points. Show that these lengths satisfy the Pythagorean Theorem. Show all of your work. (6,3,4),(7,1,3),(6,4,0)( - 6 , - 3,4 ) , ( - 7 , - 1,3 ) , ( 6,4,0 )

(Essay)
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Find the area of the parallelogram that has the vectors as adjacent sides. u=4,4,1,v=1,4,4\mathbf { u } = \langle - 4 , - 4 , - 1 \rangle , \mathbf { v } = \langle - 1,4 , - 4 \rangle

(Multiple Choice)
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Find the coordinates of the point located five units in front of the yzy z -plane, seven units to the right of the xzx z -plane, and nine units below the xyx y -plane.

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