(7). The hypotenuse of a right triangle is a diameter of the triangle's circumcircle, so the circumradius is given by. (8). A primitive right triangle is a right triangle having integer sides, , and such that, where is the greatest common divisor.
In July 1984, New York State passed the first mandatory seatbelt law in the nation, followed by New Jersey, Illinois, Missouri, Michigan, and New Mexico. 1 person found this useful.
The automotive seat belt was introduced into the United States by William Myron Noe, whose patented quick release seat belt, the AutoCrat Safety Belt, was the first seat belt installed as original equipment in the US by Ford in its 1956 model year. The first seatbelt to be included as strandard was on the 1959 Volvo.