What button on the graphing calculator is arc cos?

Answer 1

Arc-Cos can also be shown as 'shift - cos' or 'Cos^-1'.

All three variations mean the same thing.

Just be careful that you are in the right mode,; degrees or radians'.

Answer 2

It is usually [Shift] [cos]

though on some calculators it may be [2ndF] [cos]

The arc cos function is often written as cos-1 or acos, and on most calculators is written above the button to press; the colour of the text used to write it usually matches up with the key needed to press before the cos button.

On Casio calculators, it is [shift][cos] with the shift key labelled in yellow, and cos-1 written in yellow.

On a Texas Instruments calculator it is [2nd] [cos] with the 2nd key labelled in blue and the cos-1 written in blue.

On a Hewlett Packard calculator it is [<up_arrow_pointing_left>][cos] with the up_arrow_pointing left a white key with a black arrow and ACOS written in white above the cos button.

Answer 3

We don't know what style, brand, or model of calculator you have, so we can only speculate

and hope we get lucky. Here are two suggestions that may help:

1). In order to save space on the buttons and around them,

"arc cos" is often written as "cos-1". Look for that symbol.

2). If you obtained the calculator recently, you may have also received a

small booklet with it. In that booklet are all kinds of helpful instructions,

not only for replacing the batteries in the calculator, and getting it fixed

when it dies, but also step-by-step instructions on how to do stuff with it.