Thursday

April 24, 2014

April 24, 2014

Number of results: 99,923

**Calculus**

Name two sets of vectors that could be used to span a set in R^3. Show how the vectors (-1,2,0) and (3,4,0) could each be written as a linear combination of the vectors you have chosen.
*Wednesday, April 28, 2010 at 4:56pm by Jackiee*

**Calculus and Vectors**

THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a dot b
*Saturday, May 11, 2013 at 3:53pm by Johnny*

**math**

given that vectors(p+2q) and (5p-4q) are orthogonal,if vectors p and q are the unit vectors,find the dot product of vectors p and q?
*Wednesday, January 2, 2013 at 1:04am by bhawani*

**Calculus and vectors**

A parallelogram is formed by R^3 by the vectors PA=(3,2,-3) and PB=(4,1,5). The point P=(0,2,3). a) what are the location of the vertices? b) what are the vectors representing the diagonals? c) what are the length of the diagonals?
*Friday, March 23, 2012 at 4:03pm by Melinda*

**math**

given that vectors(p+2q) and (5p-4q) are orthogonal,if vectors p and q are the unit vectors,find the product of vectors p and q?
*Tuesday, January 1, 2013 at 6:21am by bhawani*

**Calculus and vectors**

Please, help I don't understand vectors T.T 1. In the prism, assume all dimensions have different lengths, state the following: a) state 3 equal vectors to DC⃗ b) state 4 opposite vectors to BC⃗ ------------------------------------- Here is the prism below, imgur ...
*Sunday, March 18, 2012 at 12:09am by Melissa*

**Calculus/Vectors**

Calculate the area of the parallelogram with sides consisting of the vectors: a = (1,2,-2) b = (-1,3,0)
*Tuesday, May 17, 2011 at 5:46pm by Anonymous*

**Calculus and vectors**

Do the vectors (2,0,1),(-2,0,0) and (2,3,0) lie on the same plane? Explain your reasoning.
*Monday, March 26, 2012 at 3:21pm by Melinda*

**Math - Algebraic Vectors**

Given the vectors: u = [3, 0] v = [-1, 2] a) Express the vector w = [2, 8] as a linear combination of vectors u and v. How do I do this?
*Wednesday, February 13, 2008 at 2:38pm by Anonymous*

**math**

two vectors are defined as a=2i+xj and b=i-4j. find value of x if a) the vectors are parallel b) the vectors are perpendicular
*Sunday, November 21, 2010 at 8:12pm by karla*

**math**

two vectors are defined as a=2i+xj and b=i-4j. find value of x if a) the vectors are parallel b) the vectors are perpendicular
*Sunday, November 21, 2010 at 8:50pm by karla*

**math**

if vectors a+b+c=0 and modulus of the vectors a, b and c are 3 ,5 and 7 respectively. find the angle between the vectors a and b.
*Saturday, January 5, 2013 at 4:04am by raja*

**calculus**

Find two unit vectors that make an angle of 60° with v = 3, 4 (Enter your answer as a comma-separated list of vectors. Round your answers to four decimal places.)
*Wednesday, August 31, 2011 at 12:46pm by colt*

**physics**

Can you help me with this one also? I know how to do it with 3 vectors but I can't seem to draw it with 4 vectors. The magnitudes of the four displacement vectors shown in the drawing are A=16.0 m, B=11.0 m, C=12.0 m, and D=26.0 m. Determine the (1) magnitude and (2) ...
*Sunday, January 23, 2011 at 9:02pm by Brittany*

**Calculus and vectors**

|C|=5 and |D|=8. The angle formed by vectors C and D is 35 degrees, and the angle formed by vectors A and C is 40 degrees. Determine |B|. Could someone explain this question
*Friday, March 23, 2012 at 12:12am by Jake*

**Calculus**

Given vectors u= (1,-1,3) and v= (-4,5,3) find an ordered triple that represents vectors 3u-2v. a.(16,1,-7) b.(11,-13,3) c.(10,-12,1) d.(7,-7,16) I dont want you to straight up give me the answer. I need someone to teach me how to solve this problem. I am home schooled and i ...
*Thursday, August 23, 2012 at 6:48pm by alana*

**Calculus and vectors-Help~David**

Rectangular prism is defined by vectors (2,0,0)(0,9,5) and (0,0,3). Find the volume. I have done this so far, would anyone please verify this. (2,0,0)(0,9,6) (0-2, 9-0, 6-0) =(-2,9,6) (-2,9,6)(0,0,3) =(2,-9,-3) (2)(-9)(-3)=54 cm^3 Therefore volume is 54 cm^3
*Thursday, March 22, 2012 at 11:25pm by Jake*

**Calculus**

Two force vectors act on an object and the dot product of the two vectors is 20. If both of the force vectors are doubled in magnitude, what is their new dot product?
*Thursday, March 29, 2012 at 7:06pm by Jake*

**CALCULUS!!!!!**

Given the vectors a = (1, 3, 4) and b = (4, 5, -4), what is the angle between the two given vectors to the nearest degree?
*Wednesday, July 2, 2008 at 5:50pm by Mathlicious*

**Calculus**

Suppose vectors a and b are vectors such that a x b =(3,1,4). What is the cross product of twice of a with twice of b?
*Tuesday, April 17, 2012 at 7:40pm by Jake*

**Math: Calculus - Geometric Vectors**

Find the magnitude and the direction of the resultant of each of the following systems of forces using geometric vectors. a) Forces of 3 N and 8 N acting at an angle of 60 degrees to each other. Please help me with this question. I don't understand the wording, so I don't know...
*Sunday, February 17, 2008 at 11:41pm by Anonymous*

**PreCalculus**

Given vectors u=7i + 3j and v = -4i + 3j, find 5u-4v in terms of unit vectors. I am just beginning the study of vectors and have this problem. Could someone help? Thanks.
*Thursday, January 29, 2009 at 9:48pm by Joanie*

**Calculus**

a) Prove that |A|^2 = A•A for every vector A. (Note, the A's are vectors) b)Use this to show that if |F(t)| is constant for t for all (a,b), then F'(t)•F(t) = 0 for t for all (a,b). (Note the Fs are vectors)
*Saturday, September 6, 2008 at 7:00pm by Mark*

**Calculus and vectors**

Please help/verify the answer. 1. When you add vectors geometrically: a) vectors are aligned tail to tail b) vectors are aligned head to head c) vectors are aligned head to tail d) vectors are put side by side Is the answer D? -------------------------------------- 2. Adding a...
*Monday, March 26, 2012 at 10:53pm by Melinda*

**Calulas and VECTORS**

THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a * b
*Wednesday, May 19, 2010 at 7:34pm by z...........................*

**Calculus**

For which following condition, will the dot product of two vectors be zero? a) If the angle between them is 90°. b) If the angle between them is 0°. c) If the angle between them is 180° d) If the vectors have the same magnitude. Anyone know what the answer is?
*Friday, July 4, 2008 at 4:23pm by MileyWannabe*

**vectors**

Determine whether each statement is true or false. Provide a brief justification. a. Two lines with parallel direction vectors willnot intersect. b. Two linesthat are perpendicularin R3 willhave perpendicular direction vectors. c. Two linesthat havenon-paralleldirection ...
*Wednesday, June 9, 2010 at 5:25pm by Alicia*

**Math**

Prove that vectors u, v and w are coplanar if and only if vectors u, v and w are linearly dependent.
*Friday, April 18, 2008 at 1:34am by Tess*

**Calculus and vectors**

Explain how the vector C⃗(Going from the head of B⃗ to the head of A⃗) can be written in terms of vectors A⃗ and B⃗ Given the shape in this url: imgur dot com/5nT3V
*Sunday, March 18, 2012 at 7:31pm by Melissa*

**Physics Vectors**

two vectors A and B have magnitude such that A>B. We do not know the directions of the vectors. however we can say that the magnitude of the sum A+B must be between? a) B and 2A b)A and A+B c) A-B and A+B d) A-B and A e) B and A+B
*Thursday, September 27, 2012 at 8:59pm by cody*

**physical science**

The resultant vector of two particular displacement vectors dose not equal the sum of the magnitudes of the individual vectors. Describe the directions of the two vectors.
*Monday, May 2, 2011 at 5:15pm by Becky*

**Calculus**

Find the inner product of vectors a and b if a = (3, 0, –1) and b = (4, –2, 5,) and state whether the vectors are perpendicular. Find the inner product of vectors a and b if a=(4,-2,-2) and b= (-7,-2,4) , and state whether the vectors are perpendicular.
*Monday, September 10, 2012 at 10:23pm by horre*

**12th grade**

prove that normal to plane containing 3 points whose position vectors are a vector,b vector,c vectorlies in direction addition of cross product of vectors b and c and cross product of vectors c and a and cross product of vectors a and b
*Tuesday, September 22, 2009 at 9:54am by parth*

**math**

Two vectors have magnitudes of 3 units and 8 units respectively. The resultant of these two vectors has a magnitude of 8 units. What is the angle between these two vectors?
*Friday, March 1, 2013 at 6:58pm by dave*

**Vectors**

THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a * b
*Saturday, May 11, 2013 at 3:54pm by Johnny*

**Math:Calculus**

Determine vector and parametric equations for the plane containing the point P0(1, -2, 3) and having direction vectors a= (4, -2, 5) and b = (-3, 3, 7). Thanks for the help.
*Friday, July 4, 2008 at 2:54pm by Susie*

**calculus**

Find parametric equations and symmetric equations for the line through P0 and perpendicular to both given vectors. (P0 corresponds to t = 0.) P0 = (4, 3, 0) i + j and j + k Not exactly sure what to do, how do I find what is perpendicular to both vectors?
*Wednesday, August 24, 2011 at 8:11pm by lines & planes*

**Discrete Math - Geometric Vectors**

Under what conditions will 3 vectors having magnitudes of 7, 24 and 25, respectively, have the zero vector as a resultant? I don't get this question at all.
*Saturday, February 9, 2008 at 5:38pm by Anonymous*

**vectors**

ok theres a graph. its like this. basically theres a ray coming from the origin going up and left diagonally at about a 30 degree angle. the question says "for the following vectors draw the component vectors along the x and y axis". what do i do?!
*Wednesday, August 5, 2009 at 2:24pm by jawn*

**physics-vectors**

If the magnitude of the sum of two vectors is greater than the magnitude of either vector, then: If the magnitude of the sum of two vectors is less than the magnitude of either vector, then: a. the scaler product of the vectors must be negative b. the scaler product of the ...
*Monday, August 6, 2007 at 12:33am by mekeke*

**Calculus III- Please Help**

2. Use the properties of the dot product to show that (⃗b·⃗c)a−(⃗a·⃗c)⃗b is perpendicular to ⃗c. Must be shown for arbitrary vectors. I have tried to assign each vector (b,a,c) arbitrary identities with unit vectors i,j,k, but I'm ...
*Monday, January 30, 2012 at 6:28pm by Joy*

**Math**

Given two non-collinear vectors a and b, show that a, axb, and (axb)xa are mutually perpendicular. Also Express the unit vectors i, j, and k as ordered triplets and show that i x j = k what are ordered triplets? Using components show that u x v = -v x u for any vectors u and v.
*Sunday, March 30, 2008 at 10:57am by Anonymous*

**Maths-Vectors Help!**

Please can you help me as I have just been introduced to your Help Forum: Determine whether the vectors u, v and w given below are linearly independent or dependent where u, v and w are non-colliner vectors such that u=2a-3b+c , v=3a-5b+2c and w=4a-5b+c. thanks. Use exactly ...
*Monday, April 16, 2007 at 8:10am by Charles*

**Discrete Math - Geometric Vectors**

I'm lost! How do you add the following vectors? Please provide a step by step answer! 1) EA - CB + DB + AD 2) PT - QT + SR - SQ
*Thursday, February 7, 2008 at 9:48pm by Anonymous*

**vectors**

If two vectors u and v fit the equation (u − v) • (u − v) = u•u+v•v, how must these vectors u and v be related? What familiar theorem does this equation represent?
*Monday, April 12, 2010 at 7:07pm by sally*

**linear algebra**

which of the following sets of vectors span R^3? a.){(1, -1, 2), (0, 1, 1)} b.) {1, 2, -1), (6, ,3, 0), (4, -1, 2), (2, -5, 4)} c.) {(2, 2, 3), (-1, -2, 1), (0, 1, 0)} d.) {(1, 0, 0), (0, 1, 0), (0, 0, 1), (1, 1, 1)} can someone show the steps to check for one of them and i ...
*Thursday, July 19, 2007 at 2:02pm by chris*

**calculus - vectors**

Show that x dot y = 1/2 ( |x + y^2| - |x|^2 - |y|^2 )
*Thursday, February 28, 2008 at 9:29pm by Michelle*

**Calculus**

Given vectors u= (3, -4, 1) and v= (2, 1, -5) Find: a) u x v b)|u x v|
*Sunday, May 16, 2010 at 10:56pm by Ariza*

**physics**

Given the vectors = (19 cm, -7 cm) in green and = (-23 cm, 9 cm) in blue shown on the grid below, calculate the magnitude of the vectors described below and select the correct sketch for each from the choices below. The tail-to-head method is used to represent the operations ...
*Tuesday, October 15, 2013 at 12:30am by butcha*

**math: Calculus - Algebraic Vectors**

A light plane is travelling at 175 km/h on a bearing of N8°E in a 40 km/h wind from N80°E. Determine the plane's ground velocity using algebraic vectors. The answer for this question is: 167 km/h , N5°W ---------------- My Work: (a , b) = ( | r | * cosθ , | r | * sinθ...
*Monday, February 18, 2008 at 12:15pm by Anonymous*

**Math: Vectors**

I forgot how to do the following, so I'm not sure if they're correct or not: Find the work done by a force "F" that causes a displacement "d". i and j = unit vectors a) F = 4i + j d = 3i + 10j W = (4i + j)(3i + 10j) W = 12|i|^2 + 40ij + 3ij + 10|j|^2 W = 12(1) + 40(0) + 3(0...
*Sunday, February 24, 2008 at 6:41pm by Anonymous*

**math**

The cruising speed of a Boeing 767 in still air is 530 mph. Suppose that a 767 is cruising directly east when it encounters an 80 mph wind blowing 40 degrees south of west. Sketch the vectors for the velocities of the airplane and the wind. Express both vectors in ordered pair...
*Monday, February 17, 2014 at 11:34pm by Connie*

**Calculus**

Show that the vectors (-1,2,3), (4,1,-2) and (-14,-1,16) do not lie on the same plane
*Wednesday, April 28, 2010 at 4:58pm by Blazon*

**Calculus **

Prove each property using Cartesian vectors: A) (u +v) + w = u + (v + w)
*Saturday, May 8, 2010 at 5:32pm by Ariza*

**Calculus **

Find the dot product of the pair of vectors; s=4i +j t=-i -j
*Saturday, May 8, 2010 at 8:51pm by Bobby*

**calculus**

Given vectors u= (t, 2t, 3) and v=(2t, 5t, -1). For what values of t a) are u and v parallel? b) are u and v perpendicular?
*Sunday, May 16, 2010 at 10:58pm by Ashley*

**Calculus**

Given vectors u= (t, 2t, 3) and v=(2t, 5t, -1). For what values of t a) are u and v parallel? b) are u and v perpendicular?
*Monday, May 24, 2010 at 8:27pm by Ria*

**calculus**

What conditions must be satisfied by vectors u and v for this to be true? |u + v| >|u - v|
*Monday, May 24, 2010 at 10:58pm by Abigail *

**Calculus**

For which value(s) of k will the dot product of the vectors (k,2k-1, 3) and (k,5,-4) be 7? I did this so far, 2k-1=5 6/2 k=3
*Thursday, March 29, 2012 at 8:23pm by Jake*

**Calculus**

Calculate the dot product of two vectors: m = [4,5,-1] and n = [6,-2,7]
*Wednesday, May 9, 2012 at 1:28am by J*

**Math: Calculus - Vectors**

Two forces of 90 N act on an object. The forces make an angle of 48 degrees to each other. Calculate the resultant force and the force that must be applied to the object to create equilibrium. My work, using geometric vectors: | r |^2 = 90^2 + 90^2 - 2(90)(90)cos132 | r | = ...
*Tuesday, February 19, 2008 at 9:47pm by Anonymous*

**Math: Vectors**

Find any vector w that is perpendicular to both vector "u = 3j + 4k" and vector "v = 2i". Note: i, j and k are unit vectors How would you solve this problem? Please walk me through?
*Tuesday, February 26, 2008 at 8:41pm by Anonymous*

**Calculus**

A rectangular prism is defined by vectors (2,0,0) (0,9,6) and (0,0,3). Find the volume.
*Thursday, March 22, 2012 at 7:47pm by Melissa*

**Calculus**

1. Find a unit vector which is perpendicular to both of the vectors m=[4, 2, -3] and n=[2, -3, 1]
*Thursday, May 24, 2012 at 10:51pm by j*

**Calculus**

2. Give that the vectors u=[2, t, -4] and v=[1, -3, t-4] are perpendicular, find the value of the constant, t.
*Thursday, May 24, 2012 at 10:52pm by j*

**Calculus**

1. Find a unit vector which is perpendicular to both of the vectors m=[4, 2, -3] and n=[2, -3, 1]
*Friday, May 25, 2012 at 1:02am by j*

**Calculus**

2. Give that the vectors u=[2, t, -4] and v=[1, -3, t-4] are perpendicular, find the value of the constant, t.
*Friday, May 25, 2012 at 1:03am by j*

**Calculus**

Let u = (-2,3) and v = (5,-6). Find the sum and the dot product of these two vectors.
*Thursday, July 5, 2012 at 10:11pm by Brock*

**college Algebra/Linear Algebra**

Find a Basis for each of these substances of R^4 (a) All vectors whose components are equal (b) All vectors whose component add to zero (c) All vectors that are perpendicular to (1,1,0,0) and (1,0,11) (d) The column space (In R^2) and nullspace(In R^5) of U=[1 0 1 0 1] [0 1 0 ...
*Wednesday, November 3, 2010 at 10:06am by traxx*

**Math - equation of plane and vectors**

A plane is defined by the equations x-4y+2z=16. Find two vectors parallel to the plane.
*Saturday, September 4, 2010 at 4:16pm by Shaila*

**Math - equation of plane and vectors**

A plane is defined by the equations x-4y+2z=16. Find two vectors parallel to the plane.
*Sunday, September 5, 2010 at 11:27pm by Shaila*

**Calculus **

Resolve u=[3,4,7] into two orthogonal vectors, one of which is collinear with v=[1,2,3].
*Sunday, May 23, 2010 at 2:12pm by Arima *

**Calculus **

Resolve u=[3,4,7] into two orthogonal vectors, one of which is collinear with v=[1,2,3].
*Sunday, May 23, 2010 at 2:43pm by Arima *

**Calculus**

3. Determine that the vectors u=[t, 4, 2t+1] and v=[t+2, 1-t, -1] are perpendicular, find the possible values of the contant, t.
*Thursday, May 24, 2012 at 10:52pm by j*

**Calculus**

3. Determine that the vectors u=[t, 4, 2t+1] and v=[t+2, 1-t, -1] are perpendicular, find the possible values of the contant, t.
*Friday, May 25, 2012 at 1:03am by j*

**Vectors**

If vector a and b are unit vectors, and |a+b|= root3, determine (2a-5b) dot product(b+3a)
*Wednesday, May 19, 2010 at 5:11pm by Shawn*

**Vectors/Calc**

Calculate the area of the parallelogram with sides consisting of the vectors: a = (1,2,-2) b = (-1,3,0)
*Tuesday, May 17, 2011 at 6:52pm by Anonymous*

**calculus**

The area of the parallelogram formed by the vectors p = (a, 1, -1) and q = (1, 1, 2) is root 35. Determine the values of 'a' for which this is true.
*Monday, May 24, 2010 at 1:05pm by Anonymous*

**Calculus**

Determine the value(s) of k such that the area of the parallelogram formed by vectors a = (k+1, 1,-2) and b =(k,3,0) is [sqrt(41)]
*Monday, April 2, 2012 at 1:46pm by Jake*

**Calculus grade 12**

Explain why three directional vectors of the plane cannot me mutually perpendicular .
*Thursday, May 3, 2012 at 11:08pm by J*

**Calculus grade 12**

Explain why three directional vectors of the plane cannot me mutually perpendicular .
*Friday, May 4, 2012 at 1:32pm by J*

**Calculus please help !**

Find the inner product of a and b if a= (3, 0, –1) and b= (4, –2, 5), and state whether the vectors are perpendicular.
*Wednesday, February 20, 2013 at 5:54pm by Becca*

**grade 12 calculus and vectors**

Determine the average rate of change form x = 1 to x = 4 for each function. a) y= x b) y=x^2 c) y=x^3 d) y=7
*Thursday, February 6, 2014 at 5:07pm by priyanka*

**math vectors**

Find the angle between two vectors. In radians and in degrees. u=<1,0,-3>, v=<2,-2,1> I got radians = 1.676 degrees = 96
*Wednesday, February 5, 2014 at 11:09pm by jay*

**Vectors**

Vectors a and b have magnitudes 2 and 3, respectively. If one of them is 50degrees, find the vector 5a-2b and state its magnitude.
*Sunday, June 15, 2008 at 2:54pm by Sam*

**Vectors**

Given vectors A = -4.8i + 6.8j and B = 9.6i + 6.7j, determine the vector C that lies in the xy plane perpendicular to B and whose dot product with A is 20.0.
*Tuesday, September 28, 2010 at 11:48pm by Victor*

**Physics**

Find the scalar product of the vectors ai+bj and bi-aj . Where a and b are arbitrary constants. What's the angle between the two vectors?
*Thursday, May 30, 2013 at 9:03am by Jacob*

**Vectors **

Determine two unit vectors that are perpendicular to both a=[-5,6,2] and d=[3,3,-8].
*Thursday, June 17, 2010 at 11:26pm by Anonymous*

**Vectors**

Vectors "v" and "w" are given by v = 5i - 2j and w = i + 3j. Find scalars r and s such that r ( v - w) = ( r + s )i - 20j.
*Thursday, April 26, 2012 at 9:32am by Cameron*

**physics**

Find the vectors.sum of ihe three vectors A=-3i-2j+7k, B=i+3j+k, C=-k
*Monday, February 4, 2013 at 8:24pm by baron*

**Vectors/Calc**

Note: u,v,w,a,b are all vectors Given that u= xa + 2yb v= -2ya + 3yb w= 4a - 2b where a and b are collinear, find the values of x and y for which 2u - v =w
*Monday, May 23, 2011 at 11:10am by Anonymous*

**Physics**

Given the displacement vectors A = (7.00 - 1.00 + 3.00 ) m and B = (6.00 + 5.00 - 3.00 ) m, find the magnitudes of the following vectors and express each in terms of its rectangular components. (a) C = A - B (b) D = 3A + B
*Wednesday, September 26, 2012 at 8:20pm by Abraham*

**calculus**

Prove that the sum of the vectors from the vertices to the centre of a regular octogon is a zero vector.
*Saturday, April 24, 2010 at 4:37pm by Anonymous*

**Physics**

The sum & difference of two non-zero vectors Ä & B are equal in magnitude.what can you conclude about these vectors?why?
*Sunday, November 25, 2012 at 6:12pm by Minte*

**vectors **

how do you determine if two vectors are a) Collinear b) orthogonal?
*Thursday, June 17, 2010 at 11:05pm by Ariza *

**vectors problem!!!! help!!!!**

Vectors u=2i+9j+0k and v=13i+18j+0k. What is the value of |u×v|?
*Sunday, May 26, 2013 at 12:07pm by robert*

**Calculus**

Find the inner product of and if = 3, 0, –1 and = 4, –2, 5, and state whether the vectors are perpendicular. 30. Find the inner product of and if and , and state whether the vectors are perpendicular. Please help !! i am so confused and lost.
*Monday, September 10, 2012 at 9:19pm by horre*

**Pre-calculus; urgent ! Please help !**

Find the inner product of a and b if a= (3, 0, –1) and b= (4, –2, 5), and state whether the vectors are perpendicular.
*Wednesday, February 20, 2013 at 5:53pm by Becca*

**vectors**

The position vectors, r km, and the velocity vectors, v km/h, of two boats at a certain time are given by ... Boat A:at 10:00 am rA=6i+10j vA=8i–2j Boat B:at 10:30 am rB=8i+5j vB=4i+j ... determine the time at which boat B should head out so that the two boats do collide.
*Thursday, February 7, 2013 at 6:27pm by Molly*

**Math (Geometry-Vectors)**

Let θ be the angle between two vectors v and u . If v*u =12, |v|=2, |u|=6√2 and 0∘<θ<180∘, what is the value of θ (in degrees)?
*Monday, April 29, 2013 at 11:30am by Bob*

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