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  1. Rotation and translation are affine transformations. So if you have a set of points... will be the same as the corresponding two points in Y. So, in summary, rotations and translations are affine transformations and therefore: 1) Angles are...

    2 Answers · Science & Mathematics · 14/12/2008

  2. The demonstration below that shows you how to easily perform the common Rotations (ie rotation by 90 , 180 , or rotation by 270) . There is a neat 'trick...

    1 Answers · Science & Mathematics · 01/11/2012

  3. For a two dimensional column vector v: [x] = v [y] The rotation matrix A(θ) is: [.cos(θ) sin(θ)] = A(θ) [-sin(θ) cos(θ...

    2 Answers · Science & Mathematics · 19/01/2008

  4. ... said that a point is a 'center of rotation ' for a system of particles 's movement, the...necesary and sufficient condition for O being a center of rotation is: xi'.xi=xi.O for each i where '...

    4 Answers · Science & Mathematics · 15/12/2006

  5. Unless otherwise directed, rotations are always counter-clockwise. So you just turn the paper pivoting...

    2 Answers · Science & Mathematics · 14/12/2006

  6. ... To find the new coordinates (assuming that the rotation is counter clock wise) sin 30 = y / 50 1/2 = y / 50 2y = 50 y = 50/2 y...

    1 Answers · Education & Reference · 30/04/2008

  7. If the point (x,y) is in quadrant I, then (-x,-y) is in quadrant III Try plotting (3,4) and (-3, -4) and see that the CCW or clockwise rotation about the origin (0,0) is 180 degrees.

    1 Answers · Science & Mathematics · 11/10/2012

  8. The matix multiplication for rotation by 45 deg anticlockwise on this line is (1/sqrt2 -1/sqrt2)(x.......)....(X...

    1 Answers · Science & Mathematics · 28/02/2010

  9. A rotation is exactly what it sounds like . . . a rotation . Think...direction. Now, there are a couple of ways to draw a rotation . One is to draw the line from the point R to one of...

    1 Answers · Education & Reference · 20/04/2009

  10. To get back to C the rotation must be a multiple of 360 degrees. Since you have ruled out...

    2 Answers · Science & Mathematics · 22/04/2009

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