DTOR( )

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Returns the radian value of an angle whose measurement is given in degrees.

Syntax

DTOR(<expN>)

<expN>

A negative or positive number that is the size of the angle in degrees.

Description

DTOR( ) converts the measurement of an angle from degrees to radians. To convert degrees to radians, dBASE Plus;

Multiplies the number of degrees by pi

Divides the result by 180

Returns the quotient

A 180-degree angle is equivalent to pi radians.

Use DTOR( ) in the trigonometric functions SIN( ), COS( ), and TAN( ) because these functions require the angle value in radians. For example, to find the sine of a 45-degree angle, use SIN(DTOR(45)), which returns .71 if the default number of decimal places is 2.

Use SET DECIMALS to set the number of decimal places DTOR( ) displays.