In article , Jerome Ranch wrote:

I'm building some dog agility equipment..an aframe now, and I need, at
the apex, a 2x4 xcut to 50 degrees. My miter box only goes to 45,
and the taper jig on my table saw only does much more acute angles.
How do I "safely" cut the 50 angle?

Protractor. Pencil. Portable circular saw.

It doesn't have to be precise; you're not making a piano, after all. Use a
speed square for a guide, if you can't follow a pencil mark cleanly with the
circular saw.

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Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.