Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I want to solve this equation $$\sin(\sin(\sin(\sin x)))=\cos(\cos(\cos(\cos x))),$$ but I don't know how to solve.

share|cite|improve this question
"Numerically" is probably the only way forward here. – Henning Makholm Feb 20 '13 at 16:19

No real solutions.
enter image description here
Do you want complex solutions?

share|cite|improve this answer
This is not a solution. – minthao_2011 Feb 21 '13 at 0:17
Assume he does because then the question is pointless. – Ali Caglayan Aug 5 '13 at 22:44

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.