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U
SER
’
S
G
UIDE
— 17
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.
*Cannot use on dimensioned values.
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