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 ▼ Micheal Jennings Junior Member Posts: 1 Threads: 1 Joined: Jan 1970 04-01-2008, 10:26 PM I want to define a complex function to use on the HP 50G as follow : LinLen(d/y)=(1 < (-720*d/y)) the < is the angle symbol. I keep getting a define error focused on the angle symbol when I try to define this function. Anyone have any ideas? Thanks ▼ Marcus von Cube, Germany Posting Freak Posts: 3,283 Threads: 104 Joined: Jul 2005 04-02-2008, 11:40 AM It looks like the angle syntax is only valid for constant numbers and not for expressions. You will need to use trig functions and the constant i.

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