COS()
Cosine of the argument
- Syntax
-
- COS (nRadiant) -> nCosine
- Arguments
-
- <nRadiant> an angle size given in radiants
- Returns
-
- <nCosine> the cosine of <nRadiant>
- Description
-
- The function COS() calculates the cosine 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 COS() function is the ankathede-hypotenuse-ratio of a right-angled triangle.
Examples
? cos (0.0) --> 1.0
? cos (1.0) --> 0.5403...
Tests
cos (0.0) == 1.0
cos (PI()/4) == sqrt(1/2)
cos (PI()/2) == 0.0
cos (PI()) == -1.0
- Status
- Ready
- Compliance
-
- COS() is compatible with CT3's COS().
- Platforms
-
- All
- Files
-
- Source is trig.c, library is libct.
- See Also