Year after year from Geometry to Calculus, my students always forgot the trig basics. What is the sin 60, cos pi/6, tan 45?? They drew circles with their fingers in the air, hold their right hands out and stare at their palms, or reach for their calculators or phones. Now they take a scrap of paper and as simply as 1-2-3, write the shortcut out in less than a minute and have every answer they need and with a little thinking can give me every common angle around the Unit Circle.I must hear OMG,