Actually, one of my math teacher told me about this. I want to know is there any relationship between this trick and their respective values?

enter image description here

  • 4
    $\begingroup$ Sin and cos mirror eachother because they are co-functions. One value depends on the other due to $sin^2(x) + cos^2(x) = 1$. As for the values themselves, there is no relation. It just so happens a trick could be made for those 5 values. $\endgroup$ – Kaynex Dec 24 '15 at 21:44
  • $\begingroup$ This question shows patterns for some other sets of angles. $\endgroup$ – Blue Dec 24 '15 at 22:11
  • $\begingroup$ The Math Forum shows how to derive those angles. $\endgroup$ – cr3 Dec 24 '15 at 23:24

It is a nice trick, but it works only for 5 listed values.

| cite | improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

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