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

sin 45

The angle units used can be changed from the Calculator ▸ Preferences 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 (Ctrl+I) 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 Ctrl+P.