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Chapter 16: Mathematics – More Fun With Numbers.                                Page 244




               Inverse Cosine:


               The inverse cosine function acos() will return an angle measurement in
               radians for the specified cosine value. This function performs the opposite of
               the cos() function.





















        Illustration 28: Acos() Function





               Inverse Sine:


               The inverse sine function asin() will return an angle measurement in radians
               for the specified sine value. This function performs the opposite of the sin()
               function.




















                                                       © 2019 James M. Reneau (CC BY-NC-SA 3.0 US)
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