The inverse cosine function has domain [-1,1] and range [0, pi]. Prove that (cos^-1)'(x) = -1 / sqrt(1-x^2)© BrainMass Inc. brainmass.com March 4, 2021, 5:45 pm ad1c9bdddf
Let y = Cos^-1 (x)
<br>then x = Cos(y)
<br>Now we will use the implicit ...
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