SIN()

Sine of the argument

Syntax

      SIN (nRadiant) -> nSine

Arguments

<nRadiant> an angle size given in radiants

Returns

<nSine> the sine of <nRadiant>

Description

The function SIN() calculates the sine of an angle whose size is given in radiants (full angle equals 2*Pi – see DTOR() for angle size given in degress). A common geometric interpretation of the SIN() function is the counterkathede-hypotenuse-ratio of a right-angled triangle.

Examples

      ? sin( 0.0 ) // --> 0.0
      ? sin( 1.0 ) // --> 0.8414...

Tests

      sin( 0.0 ) == 0.0
      sin( PI() / 4 ) == sqrt( 1 / 2 )
      sin( PI() / 2 ) == 1.0
      sin( PI() ) == 0.0

Compliance

SIN() is compatible with CT3’s SIN().

Platforms

All

Files

Source is trig.c, library is libct.

Seealso

COS(), TAN(), COT(), ASIN(), ACOS(), ATAN(), ATN2(), SINH(), COSH(), TANH(), RTOD(), DTOR(), PI()