21.3. Trigonometry
Listed below are trigonometric keys and functions available in the app.
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Symbols/Keys
Buttons º
Dms
deg
rad
sin
cos
tan
csc
sec
arcsin
arccsc
arccos
arcsec
cot
arctan
arccot
sinh
arcsinh
csch
arccsch
cosh
arccosh
sech
arcsech
tanh
arctanh
coth
arccoth
r =
e
π
∠
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Meaning/Functions
Uses/Codes Degrees, minutes, seconds (used to covert radians to degrees)
Used to enter an angle in degrees (including the fractional part)
Used to enter an angle in radians
Cosecant key (reciprocal of sine - tap sine key three times)
Secant key (reciprocal of cosine - tap cosine key three times)
Arcsine key (inverse of sine - tap sine key twice)
Arccosecant (inverse of cosecant - tap sine key four times)
Arccosine (inverse of cosine - tap the cosine key twice)
Arcsecant (inverse of secant - tap cosine key four times)
Cotangent (reciprocal of tangent - tap tangent key three times)
Arctangent (inverse of tangent - tap tangent key twice)
Arccotangent (inverse of cotangent - tap tangent key four times)
Hyperbolic sine key (press and hold e to show this option)
Inverse hyperbolic sine (inverse of sinh - tap sinh key twice)
Hyperbolic cosecant (reciprocal of sinh - tap sinh key three times)
Inverse hyperbolic cosecant (inverse of csch - tap sinh key four times)
Hyperbolic cosine (press and hold e to show this option)
Inverse hyperbolic cosine (tap cosh key twice)
Hyperbolic secant (reciprocal of cosh - tap cosh key three times)
Inverse hyperbolic secant (tap cosh key four times)
Hyperbolic tangent (press and hold e to show this option)
Inverse hyperbolic tangent (tap tanh key twice)
Hyperbolic cotangent (reciprocal of tangent - tap tanh key three times)
Inverse hyperbolic cotangent (tap tanh key four times)
Used to enter a polar equation in Graph mode
Hyperbolic function key (Switches trigonometric keys to hyperbolic keys)
Its value is 2.71828182845905 (special number) when used in calculations Trigonometric function key (Switches hyperbolic keys back to trigonometric keys)
Its value is 180 degrees (when set to degrees) and 3.1415926358979 (when set to radians) Angle symbol (used to enter polar format of complex number)
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