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 Feb3 awarded Notable Question Jul22 awarded Popular Question Oct30 awarded Supporter Oct30 revised Reverse rotation matrix deleted 455 characters in body Oct30 comment Reverse rotation matrix Rahul Narain That was the problem, plus i should use cosd instead of cos, can you write something as an anwser so you can get the bounty? :D Oct30 revised Reverse rotation matrix added 1550 characters in body Oct30 comment Reverse rotation matrix This seems to be what i am looking for, but i just can't get it to work correctly, see my question for more info! Oct30 comment Reverse rotation matrix k is the unit vector the rotation is around, and fi is the rotation in degrees Oct29 awarded Promoter Oct25 asked Difference between rotation and pure rotation Oct24 comment Matlab rotation matrix function not working correctly The diffrence are small! example sometime are 0 compared with a -0 Oct24 asked Matlab rotation matrix function not working correctly Oct24 accepted Matlab function, rotation matrix Oct24 asked Matlab function, rotation matrix Oct24 accepted Determine the complete real solution to a homogeneous differential equation Oct22 comment Reverse rotation matrix I don't think i understand! If i have a k= [1,3,4] and fi = 30, will R be [[1,6.49,-0.43],[-1.41, 7.67, 11,14],[6.35,9.16,13.69]] where the trace of R will be 22.45 and the eigenvector will be [[0.71, 0.71, 0.17],[-0.09+0.55i, -0.09-0.55i, 0.60],[-0.11-0.42i, -0.11+0.42i, 0.78]] But how dose this help me? Oct22 asked Reverse rotation matrix Sep30 comment Vectors: difference between $ab$ and $a^Tb$ So the correct answer to a^Tb will be [2] right? Sep30 awarded Scholar Sep30 accepted Vectors: difference between $ab$ and $a^Tb$