Problem 59721. finding vector pair with min angle between them

Created by dareen

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given a matrix with more than one row , compare row vectors of the given matrix and find the pair with the minumum angle between them , "without using the dot fucntion" 
you can find the angle from the following formula
 θ = cos-1 [ (a. b) / (|a| |b|) ]
the product between the two vectors is the dot product 
a⋅b=∑(ai​)*(bi)   from i=1 to n​
the length of a vector is the square root of the sum of the squares of the components

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9 Solutions
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Last Solution submitted on Apr 05, 2024

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Christian Schröder on 28 Mar 2024 at 7:10

The expected results for tests 2 and 4 seem to be incorrect.

dareen on 28 Mar 2024 at 8:14

I will be sure to check them and fix them if there are any problems

dareen on 28 Mar 2024 at 8:26

yep you are right I had a mistype in my code so it did not run on the whole matrix

dareen on 28 Mar 2024 at 8:32

thanks I have corrected them

Christian Schröder on 28 Mar 2024 at 11:53

Thanks for the quick fix!

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