<![CDATA[Math Is Fun Forum / Rotation in graph]]>2012-10-24T10:08:27ZFluxBBhttp://www.mathisfunforum.com/viewtopic.php?id=18302<![CDATA[Re: Rotation in graph]]>Thank you,but i can do matrix multiplication and i have got my answer.]]>2012-10-24T10:08:27Zhttp://www.mathisfunforum.com/viewtopic.php?pid=236901#p236901<![CDATA[Re: Rotation in graph]]>hi Harold,

Can you do matrix multiplication?

The matrix

multiplied by your coordinates written as vectors:

]]>http://www.mathisfunforum.com/profile.php?id=676942012-10-24T09:54:52Zhttp://www.mathisfunforum.com/viewtopic.php?pid=236898#p236898<![CDATA[Rotation in graph]]>Suppose I have a triangle with coordinates (1,1),(3,1),(2,2) and I want to rotate them 80 degrees so that they stay at same distance from origin,what will be the rotated triangle's coordinates?how do I find them?]]>2012-10-24T09:48:05Zhttp://www.mathisfunforum.com/viewtopic.php?pid=236897#p236897