# Yahoo Web Search

1. ### Help with rotation matrices ?

The easiest way to generate the matrix for rotations about O is by using polar...xsinθ + ycosθ Expressing in matrix form the rotation is | x’ | = | cosθ -sinθ | | x...

2 Answers · Science & Mathematics · 04/11/2013

2. ### Help with linear algebra matrix representing counterclockwise rotation ?

the rotation matrix is [ cos (t) -sin(t) ] [ sin (t...sqrt(3)/2 1/2 ] After the rotation point (x,y ) becomes ( x '...the same , but reverse y } So the matrix A you want is A...

2 Answers · Science & Mathematics · 10/03/2013

3. ### [URGENT] Help with Rotation Matrices ?

...part b you have to do the two operations separately. You can write the rotation matrix as (1/√2 1/√2) = R (1/√2 1/√2) Then you can write the matrix ...

1 Answers · Science & Mathematics · 24/03/2010

4. ### Finding angle of rotation from rotation matrices ?

...-teaching? Lol Ok. So to find any types of rotation matrices you look at the Argand Plane. Argand Plane ...

4 Answers · Science & Mathematics · 16/09/2013

5. ### Need help with rotations matrices ?

A 2d rotation matrix R has the form R = [ cos(t) sin(t) ] [ -sin(t) cos(t...

1 Answers · Science & Mathematics · 04/11/2009

6. ### a rotation matrix reprsentation?

Rotation by half the angle. If R(theta/2) is the rotation matrix for angle theta/2, R(theta/2)*R(theta/2) is two rotations by theta/2, equivalent to a single rotation by theta which is R(theta).. .

2 Answers · Science & Mathematics · 01/03/2013

7. ### A^k of the rotation Matrix ?

Multiply the rotation matrix cos(A) -sin(A) sin(A) cos(A) with the rotation matrix cos...

1 Answers · Science & Mathematics · 21/10/2013

8. ### whats the 3d rotation matrix ?

...)******Cos(A)*****0 0*************0***********1 The order of matrix multiplication is important! Visualize your rotation in 3D and choose: [ ]z [ ]x for example If you know matrix multiplication...

4 Answers · Science & Mathematics · 29/08/2008

9. ### is the rotation matrix the same like the cross product?

Nope. A rotation matrix rotates a point (or vector) about whatever angle you choose...the xy plane). This would be the "same" if the rotation matrix was chosen to be representative of a 90 degree rotation ...

1 Answers · Science & Mathematics · 02/01/2012

10. ### Find the rotation matrix ?

The rotation matrix by angle a is [ cos a, -sin a ] [ sin a, cos a ] cos 240 = - 1/2 sin 240 = - sqrt(3)/2 Just plug those in and you are there.

1 Answers · Science & Mathematics · 16/04/2008