HP 40gs User Manual page 223

TAN2SC
TAN2SC2
TCOLLECT
Computer Algebra System (CAS)
TAN2CS2 transforms this expression by replacing tan(x)
( 2 x ⋅ )
1 – cos
--------------------------------
with
( 2 x ⋅ )
sin
Typing:
TAN2CS2(TAN(X))
gives:
( 2 x ⋅ )
1 – cos
--------------------------------
( 2 x ⋅ )
sin
Replace tan(x) with sin(x)/cos(x)
TAN2SC has a trigonometric expression as an argument.
TAN2SC transforms this expression by replacing tan(x)
x ( )
sin
--------------- -
with .
x ( )
cos
Typing:
TAN2SC(TAN(X))
gives:
x ( )
sin
--------------- -
x ( )
cos
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)
( 2 x ⋅ )
sin
-------------------------------- -
with
( 2 x ⋅ )
1 + cos
Typing:
TAN2SC2(TAN(X))
gives:
( 2 x ⋅ )
sin
-------------------------------- -
( 2 x ⋅ )
1 + cos
Reconstruct the sine and the cosine of the same angle
TCOLLECT has a trigonometric expression as an
argument.
.
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