Ruby program to find the cosine of given radian value

Program/Source Code:

The source code to find the cosine of a given radian value is given below. The given program is compiled and executed successfully.

# Ruby program to find the cosine 
# of given radian value

print "Enter value in radian: ";
radian = gets.chomp.to_f;  

result = Math.cos(radian);
print "Cosine is: ",result;

Output:

Enter value in radian: 12.34
Cosine is: 0.9744873987650982

Explanation:

In the above program, we read a radian value from the user using gets.chomp.to_f and got the cosine of radian value using Math.cos() function and printed the result.