Apple iWork '09 - Manual (Page 335)

Chapter 12 Trigonometric Functions 335
Related Topics
For related functions and additional information, see:
“ACOS” on page 327
“ASIN” on page 329
“ATAN” on page 330
“ATAN2” on page 331
“COS” on page 333
“SIN” on page 336
“TAN” on page 338
“Listing of Trigonometric Functions” on page 326
“Value Types” on page 36
“The Elements of Formulas” on page 15
“Using the Keyboard and Mouse to Create and Edit Formulas” on page 26
“Pasting from Examples in Help” on page 41
RADIANS
The RADIANS function returns the number of radians in an angle expressed in degrees.
RADIANS(degree-angle)
 degree-angle: An angle, expressed in degrees. degree-angle is a number value.
Although it can be any value, it would normally be in the range –360 to +360.
Usage Notes
This function is useful if you wish to use an angle expressed in degrees with Â
any of the standard geometric functions, as they expect an angle expressed in
radians. Wrap the argument, expressed in degrees, in this function; for example,
=COS(RADIANS(degree-angle).
Examples
=RADIANS(90) returns 1.5708 (90 degrees is approximately 1.5708 radians).
=RADIANS(57.2957795130823) returns 1 (1 radian is approximately 57.296 degrees).
Related Topics
For related functions and additional information, see: