arccos :

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  • n  the inverse function of the cosine; the angle that has a cosine equal to a given number

  • Marilyn Hall Patel in CNET News
    Real was aware of ARccOS and RipGuard during the development of the RealDVD products,Patel wrote in her 58-page decision. "Real software engineers identified ARccOS and RipGuard as both copy protection systems and barriers to their...

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