(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.
Seatbelts had to be installed into vehicles as of January 1, 1968 due to a federal law. As for using them, New York was the first state to pass a law which required vehicle o â¦ ccupants to wear seat belts, which went into effect on December 1, 1984.