HP 20b Consultant Financial manual Keys Display Description

Mathematical Calculations

Press <to scroll through the menu items, starting with Trigonometry. The Trigonometry, Hyperbolic, and Probability items have sub-menus. Press I with an item displayed to access the functions within the sub menus.

Press Oto cancel the Math menu and return to current work.

Press :sto return to the top of the Math menu.

Using the Math menu, calculate Sin -1(0.5). See Table 2-4.

Table 2-4Math Menu Example

Keys Display Description

.5I

:s

Enters 0.5 and opens the Math menu starting with Trigonometry.

I<	Selects the Trigonometry menu item
	and scrolls to ASIN. Note the value
	for Sin -1is calculated immediately
	and displayed.
Ior =	Validates the result.

Note: in the Math menu, PI does not perform calculations; it overrides the current number by PI. You may start an operation, use the Math menu to execute a

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