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Operators, Functions, and Constants

When you use trigonometric functions in equations, specify the angular units by selecting Degrees or Radians in Angular Equation Units in the Equations dialog box.

Operator

Name

Notes

+

plus sign

addition

-

minus sign

subtraction

*

asterisk

multiplication

/

forward slash

division

^

caret

exponentiation

 

 

 

Function

 

 

sin (a)

sine

a is the angle; returns the sine ratio

cos (a)

cosine

a is the angle; returns the cosine ratio

tan (a)

tangent

a is the angle; returns the tangent ratio

sec (a)

secant

a is the angle; returns the secant ratio

cosec (a)

cosecant

a is the angle; returns the cosecant ratio

cotan (a)

cotangent

a is the angle; returns the cotangent ratio

arcsin (a)

inverse sine

a is the sine ratio; returns the angle

arccos (a)

inverse cosine

a is the cosine ratio; returns the angle

atn (a)

inverse tangent

a is the tangent ratio; returns the angle

arcsec (a)

inverse secant

a is the secant ratio; returns the angle

arccosec (a)

inverse cosecant

a is the cosecant ratio; returns the angle

arccotan (a)

inverse cotangent

a is the cotangent ratio; returns the angle

abs (a)

absolute value

returns the absolute value of a

exp (n)

exponential

returns e raised to the power of n

log (a)

logarithmic

returns the natural log of a to the base e

sqr (a)

square root

returns the square root of a

int (a)

integer

returns a as an integer

sgn (a)

sign

returns the sign of a as -1 or 1

For example: sgn(-21) returns -1

 

 

 

Constant

 

 

pi

pi

ratio of the circumference to the diameter of a circle (3.14...)

You can also use the Visual Basic IIf function when specifying a model dimension. This function returns one of two values depending on the evaluation of an expression. For example, if the equation specified is "D1@Sketch1" = (IIf("D1@Sketch4">15, 20, 10)) + 8, then:

If D1@Sketch4 is ...

Then D1@Sketch4 is set to ...

And D1@Sketch1 is set to ...

> 15

20

28

<= 15

10

18

 

 



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