
Teaching Primary Trigonometry Functions  Sine Cosine Tangent Help  Game Tips:  When angle A is in standard position at the graph's origin (0,0) then sin A equals (y/r). Since r is the hypotenuse of a right triangle, r can be found from point D(x,y) using x^{2} + y^{2} = r^{2} . Consequently, sin A can also be described as (opposite side)/(hypotenuse).  When angle A is in standard position at the graph's origin (0,0) then cos A equals (x/r). Also cos A can be described as (adjacent side)/(hypotenuse).  When angle A is in standard position at the graph's origin (0,0) then tan A equals the ratio = (y/x). Also tan A equals (opposite)/(adjacent).  It may take a minute to load the game at dialup speeds.  The game can be played using the mouse by itself or using the keyboard by itself.  If the game doesn't respond to keyboard input, click inside the game area to reset the game's focus.  Adjust the game's speed by pressing the + or  key repeatedly. 
More SliderMath 