HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 223
Tan2sc, Tan2sc2, Tcollect
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hp40g+.book Page 41 Friday, December 9, 2005 1:03 AM TAN2SC TAN2SC2 TCOLLECT TAN2CS2 transforms this expression by replacing tan(x) with 1-----------c---o---s--(---2----⋅---x---)sin(2 ⋅ x) . Typing: TAN2CS2(TAN(X)) gives: 1-------s--i--cn---o(---s2--(--⋅-2--x--⋅-)--x---)- Replace tan(x) with sin(x)/cos(x) TAN2SC has a trigonometric expression as an argument. TAN2SC transforms this expression by replacing tan(x) with -cs---oi-n--s--((--x-x--)-) . Typing: TAN2SC(TAN(X)) gives: -cs---oi-n--s--((--x-x--)-) Transform tan(x) with sin(2x) and cos(2x) TAN2SC2 has a trigonometric expression as an argument. TAN2SC2 transforms this expression by replacing tan(x) with ------s--i--n----(--2-----⋅---x---)----1 + cos(2 ⋅ x) Typing: TAN2SC2(TAN(X)) gives: 1-----+-s--i--nc---o-(--s2---(--⋅2---x--⋅-)--x---) Reconstruct the sine and the cosine of the same angle TCOLLECT has a trigonometric expression as an argument. Computer Algebra System (CAS) 14-41