The tan() function is defined in valarray header file. This function is used to calculate tangent of the value of each element in valarray and returns a valarray containing the tangent of all the elements.
Syntax:
tan(varr);
Parameter: This function takes a mandatory parameter varr which represents valarray.
Returns: This function returns a valarray containing the tangent of all the elements.
Below programs illustrate the above function:
Example 1:-
// C++ program to demonstrate // example of tan() function. #include <bits/stdc++.h> using namespace std;
int main()
{ // Initializing valarray
valarray< double >
varr = { 0, 0.25, 0.5, 0.75, 1 };
// Declaring new valarray
valarray< double > varr1;
// use of tan() function
varr1 = tan (varr);
// Displaying new elements value
cout << "The new valarray with"
<< " manipulated values is : "
<< endl;
for ( double & x : varr1) {
cout << x << " " ;
}
cout << endl;
return 0;
} |
Output:
The new valarray with manipulated values is : 0 0.255342 0.546302 0.931596 1.55741
Example 2:-
// C++ program to demonstrate // example of tan() function. #include <bits/stdc++.h> using namespace std;
int main()
{ // Initializing valarray
valarray< double > varr = { 1.2, 3.14, 5.0, 0.0 };
// Declaring new valarray
valarray< double > varr1;
// use of tan() function
varr1 = tan (varr);
// Displaying new elements value
cout << "The new valarray with"
<< " manipulated values is : "
<< endl;
for ( double & x : varr1) {
cout << x << " " ;
}
cout << endl;
return 0;
} |
Output:
The new valarray with manipulated values is : 2.57215 -0.00159265 -3.38052 0