HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 221
Asin2c, Asin2t, Atan2s
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hp40g+.book Page 39 Friday, December 9, 2005 1:03 AM ASIN2C ASIN2T Typing: ACOS2S(ACOS(X) + ASIN(X)) gives, when simplified: π-2 Transform the arcsin into arccos ASIN2C has as a trigonometric expression as an argument. ASIN2C transforms the expression by replacing arcsin(x) with 2-π--- − arccos(x). Typing: ASIN2C(ACOS(X) + ASIN(X)) gives, when simplified: 2-π--- Transform the arccos into arctan ASIN2T has a trigonometric expression as an argument. ASIN2T transforms the expression by replacing arcsin(x) with ar c tan ⎛ ⎜ --------x ⎝ 1 - x2⎠ Typing: ASIN2T(ASIN(X)) gives: atan ⎛ ⎜ --------x ⎝ 1 - x2⎠ ATAN2S Transform the arctan into arcsin ATAN2S has a trigonometric expression as an argument. ATAN2S transforms the expression by replacing arctan(x) with arc sin ⎛ ⎜ ---------x . ⎝ 1 + x2⎠ Computer Algebra System (CAS) 14-39