FX 65 Training guide Trigonometry

FX 65 Training guide

Be sure to select the angle unit (D, R, G) you want to use before beginning a calculation.

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]

To calculate the hyperbolic arcsine, arccosine, or arctangent of the displayed angle. Example (in degree mode): [30] [hyp] [SHIFT] [sin -1]

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.

Logarithmic Functions

You can find logarithms, natural logarithms, and antilogarithms.

[log]	Calculates the common logarithm of the displayed value.
	[100] [log]
[ln]	Calculates the natural logarithm (base e) of the displayed value.
	[90] [ln]
[SHIFT] [10x]	Calculates the common antilogarithm of the displayed value,
	which is 10 raised to the power of the value.
	[2] [SHIFT] [10x]
[SHIFT] [ex]	Calculates the natural antilogarithm of the displayed value, which
	is e raised to the power of the value.
	[1] [SHIFT] [ex]
	9

References the Casio FX-65 User’s Guide

Casio FX-65 Fraction calculator