Talk:2070: Trig Identities
Revision as of 20:02, 9 November 2018 by GreatBigDot (talk | contribs) (Point out a second possible mistake.)
I am confused by the insect line. This seems to be true only if s=t.
141.101.96.209 19:03, 9 November 2018 (UTC)
- That one and the `cas` aren't making any sense to me. GreatBigDot (talk) 20:02, 9 November 2018 (UTC)