Bradford T. answered • 11/26/22
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f -1(f(x)) = x by definition
Therefore
cos-1(cos(11π/10)) = 11π/10
Katelyn A.
asked • 11/26/22Precalculus: Find the exact value of the expression. Do not use a calculator
Find the exact value of the expression. Do not use a calculator.
𝑐𝑜𝑠^−1 [𝑐𝑜𝑠 (11𝜋/10)]
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