CharlieCharlie

Hi everyone, I'm trying to establish the relation F=Force of the head of the conrod=f(C=torque-couple of the motor) in a conrod. I tried to do it myself but apparently, I donnot have the right result because of the way I project my force vectors. I searched for an answer on google, ecosia, etc, but no one except this site (http://www.pats.ch/formulaire/cinematique/cinematique4.aspx) provides a result; but there is no explanation, no proof... I'm okay with Ft = Mmot/r and the direction of the force. Fs = Ft * cos(B) however, I really donnot understand why Fs = Ft/sin(A+B).... I rather find Fs = Ft * sin(A+B) ! Could someone explain me why I'm wrong (or why the site's wrong) please? Thanks, CharlieCharlie