Method on @infsup: cos (X) ¶

Compute the cosine in radians.

Accuracy: The result is a tight enclosure.

cos (infsup (1))
  ⇒ ans ⊂ [0.5403, 0.54031]

See also: @@infsup/acos, @@infsup/sec, @@infsup/cosh.

Package: interval