Sharp EL-9900 operation manual Calculate arctangent @t1 E

Chapter 5: Advanced Calculations — Advanced Keyboard

The following math functions can be accessed with the use of @key. To learn the basic steps of how to access the second function of each key, refer to the section “Second Function Key” of Chapter 2.

sEnters an arcsine function to be used in a trigonometric expres- sion.

Example

• Calculate arcsine 1.

@s1 E.

cEnters an arccosine function to be used in a trigonometric expression.

Example

• Calculate arccosine 0.5.

@c0.5 E.

tEnters an arctangent function to be used in a trigonometric expression.

Example

•Calculate arctangent 1.

@t1 E.

Note: Expressions with inverse trigonometric functions evaluate in the following ranges.

θ = sin-1x, θ = tan-1x				θ = cos-1x
Deg:	0	≤ θ ≤ 90		Deg:	0	≤ θ ≤ 180
Rad:	0	≤ θ ≤	π	Rad:	0	≤ θ ≤ π
			2
Grad:	0	≤ θ ≤ 100		Grad:	0	≤ θ ≤ 200

0Raises 10 to the power of x.

@Enters the Euler Number e (2.71…) to a power. The cursor will then be placed at the exponent.

Example

• Obtain a value of e3.

@@3 E.

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