Page 247 - Computer Science V2.0 Class 11

3. math.sqrt(num)
Function sqrt() takes a positive integer or floating point number as the input and returns the square root of the
number. For instance, the following function call returns the square root of 25.
>>> math.sqrt(25)
5.0
4. math.pow(num1, num2)
Function pow() takes two integers or floating point numbers as the input and returns the num1 raised to the
3
power of num2. For instance, the following function call computes 2 .
>>> math.pow(2, 3)
8.0
5. math.factorial(num)
Function factorial() takes a positive integer as an input and returns the factorial of the number. For instance,
the following function call returns the factorial of the number 5.

>>> math.factorial(5)
120
6. math.gcd(num1, num2)
Function gcd() takes two integers as an input and returns the greatest common divisor of num1 and num2.
For instance, the following function call returns 8 as the greatest common divisor of 16 and 24, both being divisible
by 8.
>>> math.gcd(16,24)
8
7. math.sin(num)
Function sin() takes a positive integer or floating point number in radians as an input and returns its arc sine
value. For instance, the following function call returns the sine value of pi/2 (3.14/2 in radians) as the output:

>>> math.sin(math.pi/2)
1.0
8. math.cos(num)
Function cos() takes a positive integer or floating point number in radians as an input and returns its cosine
value. For instance, the following function call returns the cosine value of 1.0 (radians) as the output:

>>> math.cos(0.0)
1.0

Give the function call that would yield cosine of an angle of 60°? Recall that π radians = 180°.

9. math.tan(num)
Function tan() takes a positive integer or floating point number in radians as an input and returns its arc tan
value. For instance, the following function call returns the tangent value of pi/4 (radians) as the output:
>>> math.tan(math.pi/4)
0.9999999999999999
The math module built-in functions are summarized in the following table:

Description of
S. No. Function Return Value(s) Examples
Argument(s)
1 math.ceil(num) Integer or floating point Ceiling (highest closest >>> math.ceil(13.3)
number integer) value of num 14

>>> math.ceil(-15.4)
-15
-16<-15.4<=-15

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