Engineering Fundamentals: An Introduction to Engineering, 4th ed.c

14.4 Using Excel Functions 431

TABLE 14.4 More Examples of Additional Excel Functions

Function Description of the Function

SQRT(x) Returns the square root of value x.

FACT(x) Returns the value of the factorial of x. For example, FACT

(5) will return: (5)(4)(3)(2)(1)120.

Trigonometric Functions

TAN(x) Returns the value for the tangent of x. The argument must be in

radians.

DEGREES (x) Converts the value of xfrom radians to degrees. It returns the value

of xin degrees.

ACOS(x) This is the inverse cosine function of x. It is used to determine the

value of an angle when its cosine value is known. It returns the

angle value in radians, when the value of cosine between 1 and 1

is used for argument x.

ASIN(x) This is the inverse sine function of x. It is used to determine

the value of an angle when its sine value is known. It returns the

angle value in radians when the value of sine falls between  1

and 1.

ATAN(x) This is the inverse tangent of the xfunction. It is used to determine

the value of an angle when its tangent value is known.

Exponential and Logarithmic Functions

EXP(x) Returns the value of e

x

.

LN(x) Returns the value of the natural logarithm of x. Note that xmust be

greater than 0.

LOG(x) Returns the value of the common logarithm of x.

TABLE 14.5 Data for Example 14.4

Group A Findings Group B Findings

r(kg /m^3 ) r(kg /m^3 )

1020 950

1015 940

990 890

1060 1080

1030 1120

950 900

975 1040

1020 1150

980 910

960 1020

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