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24 — C
ONSTRUCTION
M
ASTER
®
P
RO
/ T
RIG
/ D
ESKTOP
The
Trig
model (#4080) and
Desktop
(#44080) calculators have
standard trigonometric keys, in addition to right triangle/rafter keys
(e.g., rise, run, diagonal), for advanced right triangle mathematics.
The sine, cosine and tangent of an angle are defined in relation to
the sides of a right triangle.
Using the Ç key with the trigonometric function displays the
inverse (arcsine, arccosine, and arctangent). These are used to find
the angle for the sine, cosine, or tangent value entered.
S
Sine Function
— Calculates the
sine
of an entered
degree or non-dimensioned* value.
Ç S
Arcsine (sin
-1
)
— Calculates the angle for the
entered or calculated sine value.
ç
Cosine Function
— Calculates the
cosine
of a
degree or non-dimensioned* value.
Ç ç
Arccosine (cos
-1
)
— Calculates the angle for the
entered or calculated cosine value.
t
Tangent Function
— Calculates the
tangent
of a
degree or non-dimensioned* value.
Ç t
Arctangent (tan
-1
)
— Calculates the angle for the
entered or calculated tangent value.
*Note: Cannot use on dimensioned values.
4065UG-E-B 6/9/04 1:49 PM Page 24
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