ABSTRACT

It should be pretty obvious that the coordinates will change in proportion if you change the radius of the circle to some other value, r. In fact, that's the main attraction of these trig functions, because I can then write

tions defined in Equation [5.1], I get the familiar sine waves shown in Figure 5 .2. I need go no further than this figure to see a few important features of the functions. • Both functions are bounded by values of+ 1.0 and -1.0. • Both functions repeat with a period of 360". • The sine function is odd, meaning that it's reversed as it crosses zero.