The+Trigonometric+Functions

[|°Trigonometric Functions Video!]

If (x,y) is any point other than the origin on the terminal side of an angle "a" in standard position and r= the square root of x~squared + y~squared, then sin "a"= y/r csc "a"= r/y cos "a"= x/r sec "a"= r/x tan "a"= y/x cot "a"= x/y provided that no denominator is zero.


 * **"a"** || **0°** || **90°** || **180°** || **270°** || **360°** ||
 * sin "a" || 0 || 1 || 0 || -1 || 0 ||
 * cos "a" || 1 || 0 || -1 || 0 || 1 ||
 * tan "a" || 0 || undefined || 0 || undefined || 0 ||
 * csc "a" || undefined || 1 || undefined || -1 || undefined ||
 * sec "a" || 1 || undefined || -1 || undefined || 1 ||
 * cot "a" || undefined || 0 || undefined || 0 || undefined ||

Evaluating sine, cosine, and tangent with a calculator: -Set the mode [radian/degree] -Push sine/cosine/tangent then the number you wish to evaluate -Push enter and you get your answer

Evaluating cosecant, secant, and cotangent with a calculator: -Set the mode [radian/degree] -Use (1/sin**{or cos or tan!}**(the number)) media type="odeo" key="17042823" ARG0="http://media.odeo.com/6/1/4/_01__Oasis_-_Wonderwall.mp3" height="60" width="150"