THE PACKAGE JAVA.LANG

java.lang.Math

20.11

20.11.4

public static double cos(double a)

This method computes an approximation to the cosine of the argument, using the

cos

 algorithm as published in

fdlibm

 (see the introduction to this section).

Special case:

If the argument is NaN or an infinity, then the result is NaN.

20.11.5

public static double tan(double a)

This method computes an approximation to the tangent of the argument, using the

tan

 algorithm as published in

fdlibm

 (see the introduction to this section).

Special cases:

If the argument is NaN or an infinity, then the result is NaN.

If the argument is positive zero, then the result is positive zero; if the argu 

ment is negative zero, then the result is negative zero.

20.11.6

public static double asin(double a)

This method computes an approximation to the arc sine of the argument, using the

a

sin

 algorithm as published in

fdlibm

 (see the introduction to this section).

Special cases:

If the argument is NaN or its absolute value is greater than 1, then the result is

NaN.

If the argument is positive zero, then the result is positive zero; if the argu 

ment is negative zero, then the result is negative zero.

20.11.7

public static double acos(double a)

This method computes an approximation to the arc cosine of the argument, using

the

acos

 algorithm as published in

fdlibm

 (see the introduction to this section).

Special case:

If the argument is NaN or its absolute value is greater than 1, then the result is

NaN.

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