Special right triangle is 90°, leaving the remaining angle to be 30°. Right triangles whose sides are of integer lengths, with the sides collectively known as Pythagorean triples, possess angles that cannot all be rational numbers of degrees. (This follows from Niven's theorem.) They are most useful in that they may be easily remembered and any multiple of the sides produces the same relationship. Using Euclid's formula for generating Pythagorean triples, the sides must be in the ratio where "m" and "n" are any positive integers such that . There are several Pythagorean triples which are well-known, including those with sides in the
How Are You At The Factory" as though it was the second single. It reached #16 on Billboard's Album Rock Tracks chart. On his review of "Think Visual", David Wild of "Rolling Stone" wrote, "the melancholy "How Are You" is another of Ray's well-crafted songs of love and loss." The track also appeared on the compilation album, "Picture Book". Like many other Kinks singles of the 1980s, a promotional video for "How Are You" was filmed, featuring Ray Davies. Unusually, the video "How Are You" (as well as those for the two other singles from "Think Visual") was not directed by Julien Temple,