Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

How do you evaluate $cos ({cos}^{- 1} (- \frac{4}{5}))$ $cos(cos^-1(-4/5))$ ?

1 Answer

Mar 5, 2017

$- \frac{4}{5}$ $- 4/5$

Explanation:

$cos ({cos}^{- 1} (Ψ)) = Ψ$ $cos(cos^(-1) (Psi) ) = Psi$

Related questions

See all questions in Basic Inverse Trigonometric Functions

Impact of this question

2618 views around the world

You can reuse this answer
Creative Commons License