1. The problem statement, all variables and given/known data Find a linear transformation T from R3 to R3 which has the effect of rotating an object clockwise by angle θ around the x-axis. 2. Relevant equations none 3. The attempt at a solution I know that I should work with matrices to show how I came up to the final matrix, which i think has to be the following: |x'| | 1 0 0 | |y'| = | 0 cosθ -sinθ| |z'| | 0 sinθ cosθ| However, I dont know how to proceed to show how I came to the following matrix. Any help is appreciated..