# A Python Program to find the sum of sine series.

In mathematics, the sine is a trigonometric function and is represented as sin( ). In this post I will show you how to write a program to calculate sum of sine series.

**Program**

**Output**

x in degrees: 60
number of terms ‘n’: 3 0.87 |

**Explanation**

Take input for degrees and number of terms from the user and is stored in **‘x’** and **‘n’** variables. We defined a ‘**sin’** function and those **‘x’** and **‘n’** are passing as arguments in to it. To convert degrees to radians a **for** loop is used. The sine expansion formula is used to find the value of every term. The statement **round(sin(x,n),2** prints the round value of **sin(x,n)** for two numbers after the decimal point. If you want to print four numbers after the decimal point you can give **4** instead of **2**. This process continues till the number of terms is equal to **‘n’** value. Finally the sum of sine series is printed.