As per Solution 1043996, need to ban a couple of other functions to enforce instruction.
This is wrong. For example, x = 3*pi/4, cot(x) = -1; but this solution gives sqrt(1-sin(x)^2)/sin(x) = 1.
give nth decimal place of pi
Energy of a photon
Will there be a new leader?
Back to basics - mean of corner elements of a matrix
Matlab Basics II - Velocity of a particle
Return the length of the longest word in the string.
Find the product of the positive elements above the main diagonal.
Numerate input arguments
Check if a string starts with another string
Find Adjacency Matrix
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