Simulink Reference

Trigonometric Function

Perform a trigonometric function

Library

Math Operations

Description

The Trigonometric Function block performs numerous common trigonometric functions.

You can select one of these functions from the Function list: sin, cos, tan, asin, acos, atan, atan2, sinh, cosh, tanh, asinh, acosh, and atanh. The block output is the result of the operation of the function on the input or inputs.

The name of the function appears on the block. If you select the atan2 function, the block displays two inputs. The first (upper) input is the y-axis or complex part of the function argument. The second (lower) input is the x-axis or real part of the function argument.

Use the Trigonometric Function block instead of the Fcn block when you want dimensionalized output, because the Fcn block can produce only scalar output.

Data Type Support

The Trigonometric Function block accepts and outputs real or complex signals of type double.

Parameters and Dialog Box

Function

The trigonometric function.

Output signal type

Type of signal (complex or real) to output.

Sample time (-1 for inherited)

Specify the time interval between samples. To inherit the sample time, set this parameter to -1. See Specifying Sample Time in the online documentation for more information.

Characteristics

Direct Feedthrough	Yes
Sample Time	Inherited from driving block
Scalar Expansion	Yes, of the input when the function requires two inputs
Dimensionalized	Yes
Zero Crossing	No

Triggered Subsystem

Unary Minus

© 1994-2005 The MathWorks, Inc.