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...
Angle between Two Vectors
Back to basics - mean of corner elements of a matrix
Flip the vector from right to left
Matlab Basics - Create a row vector
Given a matrix, return the last eigen value
Find the function 2
Find the function
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