In addition to the weak test suite: The title of the problem says "Sinus function", yet the (incomplete) problem description mentions only "cosine" ??? Furthermore, should abs(cos(-x)) be assigned to y, or to z?
The test description has been updated. Also, new and improved test suites are added within the scope of the problem.
Please improve the test cases. Returning 1 and -1 is complete enough with these sloppy tests.
bad test suite
The test suite is not very rigorous...
Right and wrong
Angle between two vectors
Find nearest prime number less than input number
Check that number is whole number
Flip the vector from right to left
Inverse of Hilbert matrix
Find the function
Given a matrix, return the last eigen value
Fermat's Last Theorem - Fermat's conjecture
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