/diy/ - Do It Yourself

Hi all,

Looking to get some help.

I've done up what I think is the correct math for some shade sails.

The angle isn't well drawn but it's the angle of the point to point square of the sail and not the curve, if that makes any sense.

I'm looking to figure out post placement so I can tension it properly.

If someone can give it a quick look and check that my math is correct it'd be hugely appreciated.