(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.
Front seatbelts were mandatory in all cars sold in Australia after January 1, 1969. Belts had been manufactured in Australia since the late 1950s and by 1963-64 the annual volume was more than 300,000, increasing to a million over the next half decade.