I have a triangle with the points A( 5,-2) B(0,0) and C(4,2) . I have to rotate the triangle so that the line BA sits on the positive x axis. I am stuck, how to work out the values for sin, cos and tan?
I have worked out the lengths of those lines BA = sqroot, AC = sqroot and BC = sqroot. After that I have no idea where to start, any help is appreciated.