let description = [{
Given an input tensor, this function computes cosine of every
  element in the tensor. Input range is `(-inf, inf)` and
  output range is `[-1,1]`. If input lies outside the boundary, `nan`
  is returned.

  ```python
  x = tf.constant([-float("inf"), -9, -0.5, 1, 1.2, 200, 10000, float("inf")])
  tf.math.cos(x) ==> [nan -0.91113025 0.87758255 0.5403023 0.36235774 0.48718765 -0.95215535 nan]

		{"(*Part).FormName", Method, 0},
		{"(*Part).Read", Method, 0},
		{"(*Reader).NextPart", Method, 0},
		{"(*Reader).NextRawPart", Method, 14},
		{"(*Reader).ReadForm", Method, 0},
		{"(*Writer).Boundary", Method, 0},
		{"(*Writer).Close", Method, 0},
		{"(*Writer).CreateFormField", Method, 0},
		{"(*Writer).CreateFormFile", Method, 0},
		{"(*Writer).CreatePart", Method, 0},

1806          ; disallowed                             # 3.0  MONGOLIAN TODO SOFT HYPHEN
1807..180A    ; valid                  ;      ; NV8    # 3.0  MONGOLIAN SIBE SYLLABLE BOUNDARY MARKER..MONGOLIAN NIRUGU
180B..180D    ; ignored                                # 3.0  MONGOLIAN FREE VARIATION SELECTOR ONE..MONGOLIAN FREE VARIATION SELECTOR THREE