Hi =) This is my first "release" of my formatted text files assembled using TxtRider format. I know how annoying typing trig identities into your calculator can be and how even more annoying it is to view them. (Of course, we all *could* just memorize them all, but this is a "just in case" thing...) So here they are. Included are: trig.89t light.89t vector.89f Trig.89t is the main text file that includes all of the basic sine identities, the basic cosine identities, the basic tangent identities, and the laws of cosine and area of triangles (using sines) in generalized format. Light.89t is simply another little text file I put together for physics. And vector... well, it's vector addition! Here is the syntax: vector({mag 1, angle 1},{mag 2, angle 2}) now press [DIAMOND] [ENTER] and the function returns the resultant and its final angle. I hope this helps people. If anyone wants me to continue to post these texts, PLEASE EMAIL ME AT: arkane17@hotmail.com <- Any mistakes I have... tell me here =) Also included is a copy of TxtRider just in case you don't have it, so you don't have to rummage around the site to find it. This extremely godlike program needs doorsos and the user, graph, zip, and file libraries. Thanks to Marc Teyssier for TxtRider! =) Oh yeah, anyone want a full library of the sec, csc, cot, arcsec, arccsc, and arccot functions all put into one menu? Or heron's formula? email me and I'll post my calc's menu. ^_^ --Zane Tian-- arkane17@hotmail.com AIM: arkane017