Trigonometric and hyperbolic functions

This section describes functions for performing trigonometric and hyperbolic operations. In all of the functions, the arguments are expressions resolving to angles measured in radians, where x should be interpreted as a real number.

All angles are measured in radians.

All functions can be used in both the data load script and in chart expressions.

Cosine of x. The result is a number between -1 and 1.

cos( x )

Inverse cosine of x. The function is only defined if -1≤x≤1. The result is a number between 0 and p.

acos( x )

Sine of x. The result is a number between -1 and 1.

sin( x )

Inverse sine of x. The function is only defined if -1≤x≤1. The result is a number between - p/2 and p/2.

asin( x )

Tangent of x. The result is a real number.

tan( x )

Inverse tangent of x. The result is a number between - p/2 and p/2.

atan( x )

Two-dimensional generalization of the inverse tangent function. Returns the angle between the origin and the point represented by the coordinates x and y. The result is a number between - p and + p.

atan2( y,x )

Hyperbolic cosine of x. The result is a positive real number.

cosh( x )

Hyperbolic sine of x. The result is a real number.

sinh( x )

Hyperbolic tangent of x. The result is a real number.

tanh( x )

Examples:

The following script code loads a sample table, and then loads a table containing the calculated trigonometric and hyperbolic operations on the values.

SampleData: LOAD * Inline [Value -1 0 1]; Results: Load *, cos(Value), acos(Value), sin(Value), asin(Value), tan(Value), atan(Value), atan2(Value, Value), cosh(Value), sinh(Value), tanh(Value) RESIDENT SampleData; Drop Table SampleData;

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