Tcl Library Source Code

ticket subject: proposal add sind, cosd, etc to geometry functions.
The proposed 13 trig functions as scalar in degrees are listed below. Recognise these  trig functions (with radian measures) are convertible with your degToRad and radToDeg constants in the TCLLIB, but the usual trigonometric functions with input values as scalar or vector in degrees might be convenient to some TCLLIB users. Maybe these sind and cosd functions are already available in other TCL libraries, but not known to me (from some docs and later textbooks). As noted on the ticket entry, these proposed changes are cosmetic and do not interfere with existing user programs.

math:geometry.
::math::geometry::degToRad angle 
::math::geometry::radToDeg angle

math::geometry(n) 1.2.2 tcllib "Tcl Math Library"
list of proposed 15 trig functions.
sind(x)=Sine of argument in degrees,
 cosd(x)=Cosine of argument in degrees,
 tand(x)=Tangent of argument in degrees, 
cotd(x)=Cotangent of argument in degrees, 
asind(x)=returns the inverse sine (sin-1) of the elements of X in degrees,
 acosd(x)=returns the inverse cosine (cosin-1) of the elements of X in degrees,,
 atand(x)=Inverse tangent in degrees, 
acotd(x)=Inverse cotangent in degrees, 
secd(x)=Secant of argument in degrees,
cscd(x)=Cosecant of argument in degrees,
asecd(x)=Inverse secant in degrees, 
acscd(x)=Inverse cosecant in degrees,
atan2d(x1, x2)=Four-quadrant inverse tangent in degrees