Trigonometry Angles—π/5

Author

Eric W. Weisstein
May 31, 2003

This notebook downloaded from http://mathworld.wolfram.com/notebooks/Trigonometry/TrigonometryAnglesPi5.nb.

For more information, see Eric's MathWorld entry http://mathworld.wolfram.com/TrigonometryAnglesPi5.html.

©2005 Wolfram Research, Inc. except for portions noted otherwise

Values

{HoldForm[#[Pi/5]],Together/@FullSimplify[#[Pi/5]]}&/@{Cos,Cot,Csc,Sec,Sin,Tan}//TableForm//TraditionalForm

Figure

<<Utilities`Plot`

TrigPlot[Pi/5]