I need to find the exact value of sin(π/16) without using a calculator. I thought that to do this I have to use the formula: but I can't find the correct two angles that add up to π/16 from all the angles on the unit circle. Thanks for any help.
Last edited by mr fantastic; Apr 20th 2009 at 01:45 AM.
Reason: This question was posted by another user whose name I felt might offend some members.