[USMA:26402] In the US, a 100% grade is 90�

[Brij Bhushan Vij]

Yes, without knowing or realising, The French grad (1/100th of a right 
angle) was called The Metric Degree in my base contribution - The Metric 
Second for both Time & arc-angle (1973).

Brij Bhushan Vij <[EMAIL PROTECTED]>
Aa Nau Bhadra Kritvo Yantu Vishwatah -Rg Veda.
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Thirty days in July, September:
April, June, November, December;
All the rest have thirty-one; accepting February alone:
Which hath but twenty-nine, to be (in) fine;
Till leap year gives the whole week READY:
Is it not time to MODIFY or change to make it perennial, Oh Daddy!
And make the calendar work with Leap Week Rule!
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From: James Wentworth <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: "U.S. Metric Association" <[EMAIL PROTECTED]>
Subject: [USMA:26389] In the US, a 100% grade is 90�
Date: Wed, 16 Jul 2003 11:30:45 -0800
Marcus and Joe are correct regarding the US definition of the grade 
(English
spelling), which is the French grad (1/100th of a right angle).  This is
another example of "hidden" metric that Americans have long used and
understood, although many don't know it *is* metric!

In high school I was taught that definition.  The math textbook said that
only the first quadrant of the unit circle (0 - 100 grades [0� - 90�]) is
commonly used, which is why grades are usually expressed as a percentage in
the US.  Our road signs use % grade, and my father used % grade when he
built houses.  --  Jason
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