C++ Math tan() Function

C++ Math tan() Function with tutorial for beginners and professionals with examples on isgreaterequal(), less(), islessequal(), islessgreater(), isunordered(), exp(), frexp(), ldexp(), log(), log10(), modf(), exp2(), expm1(), log1p(), log2(), logb(), scalbn(), scalbln() etc.

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C++ Math tan()

The function finds the tangent of an angle specified in terms of radian.

Syntax

Consider a radian 'x'. Syntax would be:

float tan(float x);
double tan(double x);
long double tan(long double x);
double tan(integral x);

Note: If the value passed is an integral type, then it is cast to double.

Parameter

x: The value given in radian.

Return value

It returns the tangent of an angle given in radian.

Example 1

Let's see the simple example when the value of x is positive.

#include 
#include
using namespace std;
int main()
{
   float degree=10;
   float radian=degree*3.14/180;
   cout<<"Tangent of an angle is : "<

Output:

Tangent of an angle is : 0.176236

In this example, tan() function calculates the tangent of an angle when the value of degree is equal to 10.

Example 2

Let's see the simple example when the value of degree is negative.

#include 
#include
using namespace std;
int main()
{
  float degree= -60;
  float radian=degree*3.14/180;
  cout<<"Tangent of an angle is :"<

Output:

Tangent of an angle is :-1.72993

In this example, tan() function calculates the tangent of an angle when the value of degree is negative i.e -60.

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