R/sind.R

In pracma: Practical Numerical Math Functions

Defines functions acscd asecd cscd secd atan2d acotd atand acosd asind cotd tand cosd sind

Documented in acosd acotd acscd asecd asind atan2d atand cosd cotd cscd secd sind tand

##
##  s i n e d . R  Trigonometric Functions with degrees
##


sind <- function(x)  sinpi( x / 180 )
cosd <- function(x)  cospi( x / 180 )
tand <- function(x)  sinpi(x/180) / cospi(x/180)
cotd <- function(x)  1 / tand(x)

asind <- function(x)  asin(x) * 180 / pi
acosd <- function(x)  acos(x) * 180 / pi
atand <- function(x)  atan(x) * 180 / pi
acotd <- function(x)  atand(1 / x)

atan2d <- function(x1, x2)  atan2(x1, x2) * 180 / pi

secd  <- function(x)  1 / cosd(x)
cscd  <- function(x)  1 / sind(x)
asecd <- function(x)  asec(x) * 180 / pi
acscd <- function(x)  acsc(x) * 180 / pi

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