Nothing
## ---- warning = FALSE, message = FALSE, tidy = TRUE---------------------------
library("iemisc")
# Examples from GNU Octave cosd
cosd(c(0, 180, 360))
cosd(c(90, 270, 45))
try(cosd(pi * seq(0, 80, by = 10) / 180))
# gives error message since the computed value is in radians rather than degrees
cos(pi * seq(0, 80, by = 10) / 180)
# this is correct since `cos` expects the angle in radians
try(cosd(seq(0, 80, by = 10) * 180 / pi))
# converts angles in radians to degrees; however, it will still receive an error message with this current implementation. You can use the work-around below:
xx <- seq(0, 80, by = 10) * 180 / pi
cosd(xx)
try(cos(seq(0, 80, by = 10) * 180 / pi))
# converts angles in radians to degrees; however, this is incorrect since `cos` expects the angle in radians and not degrees
cosd(90)
cos(pi/2)
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