in my first physics class we were assigned to research about the oh-so-famous SOH-CAH-TOA. at first it thought "what the hell is this soh cah toa? Haha, well, better find out." i was surprised that if you use this, you could get sides and angles of a right triangle just by a given side and an angle.at first, i dunno how to formulate it but i became used to it now. wow, surprising i think