Casio FX260HA User Manual
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FX 260 Training guide
Trigonometry
Be sure to select the angle unit (D, R, G) you want to use before beginning a calculation.
Mode 4 = Degrees (Deg)
Mode 5 = Radians (Rad)
Mode 6 = Grads (Gra)
Trigonometric/Inverse Trigonometric Functions
To calculate the sine, cosine, or tangent of the displayed angle.
Example (in degree mode): [30] [sin] (= .5)
To calculate the arcsine, arccosine, or arctangent.
Example (in degree mode): [.5] [SHIFT] [sin] (= 30)
Hyperbolic/ Inverse Hyperbolic Functions
To calculate the hyperbolic sine, cosine, or tangent of the displayed angle.
Example (in degree mode): [3.6] [hyp] [sin] (= 18.28545536)
To calculate the hyperbolic arcsine, arccosine, or arctangent of the displayed angle.
Example (in degree mode): [30] [hyp] [SHIFT] [sin
-1
] OR
[30] [SHIFT] [hyp] [sin
-1
] (= 4.094622224)
Coordinate Conversion
You can convert between rectangular and polar coordinates.
Make sure you are using the correct angle unit (D, R, G) before starting your calculation.
[SHIFT] [R-P] Rectangular to polar coordinate conversion
[SHIFT] [P-R] Polar to rectangular coordinate conversion
[SHIFT] [X-Y] Use this operation to switch between the two coordinates produced by the
conversion operation.
Example: To convert polar coordinates (r = 2, θ = 60) to rectangular
coordinates (x, y).
[2] [SHIFT] [P-R] [60] [=] This gives you the x value.
[SHIFT] [X-Y] This gives you the y value.
Degrees/Minutes/Seconds
You can perform calculations using degrees, minutes, and seconds, and convert
between sexagesimal and decimal values.
Examples:
Keystrokes Display
[2.5] [=] 2.5
Press [
] 2° 30° 0
,,,o
[10] [
] [15] [ ] [12] [ ] [x] [4] [=] 41° 0° 48°
,,,o ,,,o ,,,o
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References the Casio FX-260 Solar User’s Guide Casio FX-260 Scientific calculator