Is there any way that I can get the sin(), cos() and tan() functions to return an angle? For example, like when you press 2nd then sin on a calculator. Or should I use different functions?
i belive what you are looking to use are the acos(), asin(), and atan() functions.
for instance: tan() returns the ratio of the sides (y/x or opposite/adjacent) when given the angle in radians as the argument .... whereas atan() returns the angle in radians, when given the ratio of the sides ( y/x or opposite/adjacent) as the argument.
('arctan' -- called 'atan' here -- is the inverse function of 'tan'. it is the one that is actually used when you use the 2nd key on your calculator in conjunction with 'tan'. And as mentioned, angles are in radians. to convert to degrees, muliply the radian value by 180/pi)
[edit] the functions are called as "atan"... not "arctan" as i originally typed. sorry[/edit]
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Last edited by jephthah; Jul 9th, 2009 at 8:40 pm.
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