Nothing
test_acotd <- function() {
expect_equal(acotd(270), 0.2122056, tolerance = 1e-06)
expect_equal(acotd(45), 1.27303, tolerance = 1e-06)
expect_equal(acotd(30), 1.909152, tolerance = 1e-06)
expect_equal(acotd(1), 45)
expect_error(acotd(0))
expect_error(acotd("sq"))
invisible(NULL)
}
test_acotd()
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