Merge pull request #37396 from rohanreddych:patch-1

PiperOrigin-RevId: 300328374
Change-Id: I860c63d196b9477050912664786cbea6b9da4e5d

tensorflow/core/api_def/base_api/api_def_Acos.pbtxt

@@ -1,4 +1,15 @@
 op {
   graph_op_name: "Acos"
   summary: "Computes acos of x element-wise."
+  description: <<END
+Given a tensor `x`, this operation returns a tensor containing the 
+arccosine of each element in `x` or in other words it returns the 
+inverse of cos of the value.
+
+For Example :
+
+>>> x = tf.constant([1,0], dtype=tf.float16) 
+>>> tf.math.acos(x)
+<tf.Tensor: shape=(2,), dtype=float16, numpy=array([0.  , 1.57], dtype=float16)>
+END
 }