HP 20b Business Consultant

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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 O to cancel the Math menu and return to current work.

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

Using the Math menu, calculate Sin

-1

(0.5). See Table 2-4.

Table 2-4 Math Menu Example

Keys Display Description

.5I

Enters 0.5 and opens the Math

menu starting with

Trigonometry

Selects the

Trigonometry

menu item

and scrolls to ASIN. Note the value

for Sin

-1

is calculated immediately

and displayed.

I or = Validates the result.

Note: in the Math menu,

does not perform calculations; it overrides the current

number by

. You may start an operation, use the Math menu to execute a

HP 20b Business Consultant - Page 29