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In this post, you will find the solution for Class 2 – Find the Torsional Angle in Python-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.
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Introduction To Python
Python is a widely-used, interpreted, object-oriented, and high-level programming language with dynamic semantics, used for general-purpose programming. It was created by Guido van Rossum, and first released on February 20, 1991.
Python is a computer programming language often used to build websites and software, automate tasks, and conduct data analysis. It is also used to create various machine learning algorithm, and helps in Artificial Intelligence. Python is a general purpose language, meaning it can be used to create a variety of different programs and isn’t specialized for any specific problems. This versatility, along with its beginner-friendliness, has made it one of the most-used programming languages today. A survey conducted by industry analyst firm RedMonk found that it was the most popular programming language among developers in 2020.
Link for the Problem – Class 2 – Find the Torsional Angle in Python – HackerRank Solution
Class 2 – Find the Torsional Angle in Python – HackerRank Solution
Problem:
You are given four points A, B, c and D in a 3-dimensional Cartesian coordinate system. You are required to print the angle between the plane made by the points A, B, C and B, C, D in degrees(not radians). Let the angle be PHI.
Cos(PHI) = (X*Y) / |X| |Y| where X = ABxBC and Y = BC x CD.Here, X.Y means the dot product of X and Y, and ABxBC means the cross product of vectors and . Also, AB = B – A.
Input Format :
One line of input containing the space separated floating number values of the X,Y and Z coordinates of a point.
Output Format :
Output the angle correct up to two decimal places.
Sample Input :
0 4 5 1 7 6 0 5 9 1 7 2
Sample Output :
8.19
Class 2 – Find the Torsional Angle in Python – HackerRank Solution
import math
class Points(object):
# Class 2 - Find the Torsional Angle in Python - HackerRank Solution START
def __init__(self, x, y, z):
self.x = x
self.y = y
self.z = z
def __sub__(self, no):
x = self.x - no.x
y = self.y - no.y
z = self.z - no.z
return Points(x, y, z)
def dot(self, no):
x = self.x * no.x
y = self.y * no.y
z = self.z * no.z
return x + y + z
def cross(self, no):
x = self.y * no.z - self.z * no.y
y = self.z * no.x - self.x * no.z
z = self.x * no.y - self.y * no.x
return Points(x, y, z)
# Class 2 - Find the Torsional Angle in Python - HackerRank Solution END
def absolute(self):
return pow((self.x ** 2 + self.y ** 2 + self.z ** 2), 0.5)
if __name__ == '__main__':
points = list()
for i in range(4):
a = list(map(float, input().split()))
points.append(a)
a, b, c, d = Points(*points[0]), Points(*points[1]), Points(*points[2]), Points(*points[3])
x = (b - a).cross(c - b)
y = (c - b).cross(d - c)
angle = math.acos(x.dot(y) / (x.absolute() * y.absolute()))
print("%.2f" % math.degrees(angle))
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