August 2000
Beginner to intermediate
608 pages
17h 15m
English
Content preview from Excel 2000 in a Nutshell
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Name
ACOS
Synopsis
Use ACOS to determine the arccosine of a number. The arccosine is the inverse of the cosine. The result of the function is expressed in radians.
To Calculate
=ACOS(Number)-
Number This required argument must specify a number between -1 and 1 that indicates the cosine value.
Converting Between Radians and Degrees
You can convert the result of the function from radians to degrees by multiplying the result by 180/π.
Example
Figure 14-2 illustrates how ACOS is used to determine the arccosine for an angle based on the cosine value. You will notice the arccosine amount is equal to the radian measurement of the angle.
Figure 14-2. Use the various trigonometric functions to work with angle measurements
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