Ilmar Kerm
ikerm hot ee 2001, 2002.
Tõivo Leedjärv
toivo linux ee 2002, 2003.
Priit Laes
plaes plaes org 2004–2006, 2008, 2009
Ivar Smolin
okul linux ee 2005–2010, 2014–2015, 2018.

# Trigonometry

Trigonometry can be performed using the sin, cos, and tan function.

sin 45

The angle units used can be changed from the CalculatorPreferences menu. Trigonometry buttons are visible when in Advanced mode.

Hyperbolic functions are available by adding "h" to the end of a function.

sinh 0.34

Inverse functions are entered either using the inverse symbol ⁻¹ (CtrlI) or the "a" form of the function. The following two equations are equivalent.

sin⁻¹ 0.5

asin 0.5

To enter π with the keyboard use CtrlP.