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Question: Solve & Trig: Why is the output different when arctan is involved ?

Question:Solve & Trig: Why is the output different when arctan is involved ?

C_R 2632 Maple
solve arctan inverse-kinematics
April 25 2022
2

Solve produces different output in the attachment depending on how it is used. Why is that and how can simplification to arctan(y/z) be avoided? Arctan(y/z) only gives correct angles for positive y and z.  I prefer arctan(y,z) output that I can subsequently simplify to the y and z ranges of interest (if possible). Imagine “wrong” simplification of complex algebraic output (e.g., from inverse kinematics).

Arctan.mw
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