Owner manual

“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

SIN

The SIN function returns the sine of an angle that is expressed in radians.

SIN(radian-angle)

Â radian-angle: An angle, expressed in radians. radian-angle is a number value.

Although it can be any value, it would normally be in the range –π to π (–pi to +pi).

Usage Notes

To return an angle in degrees, use the DEGREES function (to convert radians to Â

degrees) with this function; that is, =DEGREES(SIN(radian-angle)).

Examples

=SIN(1) returns 0.841470985, the sine of 1 radian (approximately 57.3 degrees).

=SIN(RADIANS(30)) returns 0.5, the sine of 30 degrees.

=SIN(PI()/2) returns 1, the sine of π/2 radians (90 degrees).