New Trigonometry Method: Quadrance and Spread

[Pythagorean]

I haven't been here for a long time, so sorry if this was already posted:

http://physorg.com/news6555.html

Dr Norman Wildberger has devised a new method of trigonometry that gets rid of sin, cos, tan (and the like) functions and uses algebra instead. It's supposedly straight forward, more accurate in a lot of cases, and more consistant with basic math.

it uses properties called quadrance and spread.

Does anybody know anything about this? Is it credible?

 

[amcavoy]

https://www.physicsforums.com/showthread.php?t=89413

 

[Pythagorean]

thanx much!