Sigh! There should really be some quality control on Cody, to save us from stupid problems like this...
The third element of aVec in the the image contained within your problem description does not match the third element of aVec used in the test suite.
Convert a vector into a number
CONVERT TAN TO SIN
07 - Common functions and indexing 4
Find out value of sine given by degree.
02 - Vector Variables 3
05 - Vector Equations 2
04 - Scalar Equations 1
03 - Matrix Variables 3
07 - Common functions and indexing 5
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