formula -- payoff(s) / challenge(s) / game(s) / math(s) / plan(s)

* _ .. -- @ media / idea(s) / change(s) / theme(s) ? [:/] _

angle(s) 

sine of angle = opposite / hypotenuse
cosine of angle = adjacent / hypotenuse
tangent of angle = opposite / adjacent

radians = degrees * Math.PI / 180
degrees = radians * 180 / Math.PI

animation(s)

* - play / social(s) / machine(s) / method(s) / cycle(s) # ! @ Æ