Revision as of 23:58, 4 July 2004 edit Icairns (talk \| contribs) 76,837 edits m The Three Degrees? ← Previous edit		Revision as of 04:21, 7 July 2004 edit undo Revolver (talk \| contribs) 3,180 edits No edit summary Next edit →
Line 99: ===Multiple of 3 deg=== Is it true that you can calculate the exact value of the sin or cos of any multiple of 3 deg (π / 60), as stated in this article? This looks to me like a typo for multiples of thirty degrees, which I would agree can be done by hand. Can anyone work out sin (39 deg) exactly by hand? (no calculators allowed) [[User:Icairns\|Ian Cairns]] 23:58, 4 Jul 2004 (UTC) :This is done at [[exact trigonometric constants]], although I haven't personally checked every identity. [[User:Revolver\|Revolver]] 04:21, 7 Jul 2004 (UTC)

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