Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

Question #b1a65

1 Answer

Apr 23, 2017

#cos(cos^(−1)(3pi)) = 3pi#, because any function #f(f^-1(x)) = x#

Related questions

See all questions in Double Angle Identities

Impact of this question

1361 views around the world

You can reuse this answer
Creative Commons License