OpenStax, Algebra and Trigonometry 2e §8.3 Inverse Trigonometric Functions · Exercise 40 · Trigonometry · Inverse functions

Inverse Trigonometric Functions · Exercise 40

Find the exact value of the expression in terms of $x$ with the help of a reference triangle.

$cos (t a n^{- 1} (3 x - 1))$

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OpenStax, Algebra and Trigonometry 2e · §8.3 Inverse Trigonometric Functions · Exercise 40

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