No need for finding / calculating any phi or angle here. Just simpler than it is written.
Factorize THIS, buddy
How to subtract?
Cell Counting: How Many Draws?
Relative ratio of "1" in binary number
Beginner's Problem - Squaring
Flip the main diagonal of a matrix
Is A the inverse of B?
What is the distance from point P(x,y) to the line Ax + By + C = 0?
Pythagorean perfect squares: find the square of the hypotenuse and the length of the other side
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