No need for finding / calculating any phi or angle here. Just simpler than it is written.
Times 2 - START HERE
Getting logical indexes
Is it an Armstrong number?
Is A the inverse of B?
How many days does the cat take to climb out of the hole?
What is the distance from point P(x,y) to the line Ax + By + C = 0?
Find the largest value in the 3D matrix
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