Angles calcuated from angles

[Anonymous]

Hello everyone. I've gone and created a problem I can't solve again. Futzing with the Parameter Manager didn't get me anywhere.

I'm trying to create a block in which the angle of one line changes based on the angle of another. In the attached picture and block, the red line is independent, and the blue line depends on the angle of the red.

For the sake of keeping this as simple as possible, the angles should be related like this: Ar = 0.85*Ai (the final result involves some trig)

I have attached a *.dwg (ACAD 2010/2010LT) and block with rotation actions that control each of the lines, but this is not entirely what I am looking for. the final block would have only one control grip on the red line.

I would really appreciate any help on this!

Picture below for reference.

[tiger4956 · Accepted solution]

I did what you asked using constraints.  Constraints don't always play well with regular parameters, so this may not be what you actually need.  If these lines are part of a more complex block, then please consider posting the entire drawing.

Good Luck!

[Anonymous]

It's perfect! Thank you!

I must have been botching the expression syntax, because my expressions didn't look nearly as neat. So now I know more about that, too!