cos():

The C++ library function, “cos()” returns the cosine of an argument.

To use the “cos()” function, the “cmath” header file is required

The “cos()” function is useful in some of the scientific and other special-purpose programs.

The argument and the return type of the “cos()” is double.

Example:

b = cos(a);

Explanation:

“b” is a variable which contains the result of a cosine of the argument where “a” is a argument.

log():

Log is an “inverse operation” to exponentiation.

To use the “log()” function, the “cmath” header file is required.

Log returns the “natural logarithm” of argument.

The argument and the return type of the “log()” is double.

Example:

b = log(a);

Explanation:

“b” is a variable which contains the result of a natural logarithm of the argument where “a” is a argument.

sin():

The C++ library function, “sin()” returns the sine of an angle.

To use the “sin()” function, the “cmath” header file is required.

The “sin()” function is useful in some of the scientific and other special-purpose programs.

The argument and the return type of the “sin()” is double.

Example:

b = sin(a);

Explanation:

“b” is a variable which contains the result of a sine of the argument where “a” is a argument.

exp():

The C++ library function, “exp()” returns exponential function of an argument.

To use the “exp()” function, the “cmath” header file is required.

The “exp()” function is useful in some of the scientific and other special-purpose programs.

The argument and the return type of the “exp()” is double.

Example:

b = exp(a);

Explanation:

“b” is a variable which contains the result of an exponent of the argument where “a” is an argument.

log10():

Log is an “inverse operation” to exponentiation.

To use the “log10()” function, the “cmath” header file is required.

Log10 returns the “base -10 logarithm” of argument.

The argument and the return type of the “log10()” is double.

Example:

b = log10(a);

Explanation:

“b” is a variable which contains the result of a base-10 logarithm of the argument where “a” is a argument...

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Chapter 3.7, Problem 3.19CP

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Solution Summary: The author explains how the C++ library function, "cos()" returns the cosine of an argument.

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