torch.acos — PyTorch 2.7 documentation (original) (raw)

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torch.acos(input: Tensor, *, out: Optional[Tensor]) → Tensor¶

Computes the inverse cosine of each element in input.

outi=cos⁡−1(inputi)\text{out}_{i} = \cos^{-1}(\text{input}_{i})

Parameters

input (Tensor) – the input tensor.

Keyword Arguments

out (Tensor, optional) – the output tensor.

Example:

a = torch.randn(4) a tensor([ 0.3348, -0.5889, 0.2005, -0.1584]) torch.acos(a) tensor([ 1.2294, 2.2004, 1.3690, 1.7298])

• torch.acos
  • acos()