Question

Reference: Case Study 1 (Python)

>>> import math

>>> numsides = 8

>>> innerangleB = 360.0/numsides

>>> halfangleA = innerangleB/2

>>> onehalfsideS = math.sin(math.radians(halfangleA))

>>> sideS = onehalfsideS * 2

>>> polygonCircumference = numsides * sideS

>>> pi = polygonCircumference / 2

>>> pi

3.0614674589207183

>>>

Refer to the session in the accompanying case study. Which line uses the math module?

	A.	innerangleB = 360.0/numsides
	B.	onehalfsideS = math.sin(math.radians(halfangleA))
	C.	pi = polygonCircumference / 2
	D.	sideS = onehalfsideS * 2

Answer 1

Option B: onehalfsideS = math.sin(math.radians(halfangleA))

import math # It import math module from the library

math.sin() math.radians() # Accessing math module functions

math.radians(halfangleA) # It converts angle halfangleA from degrees to radians

math.sin(math.radians(halfangleA)) # It returns sine of math.radians(halfangleA), in radians

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