In computer science, a similarity metric named after this function can be used to find two vectors that are the most similar.
In computer science, a similarity metric named after this function can be used to find two vectors that are the most similar. The Taylor series for this function begins with one minus x-squared-over-2-factorial plus x-to-the- fourth-over-four-factorial. This function names a law that is an extension of the Pythagorean theorem, and can be used to find the side lengths and angles of any triangle. The reciprocal of this function is the secant. For 10 points, name this trigonometric function, which for a right triangle can be defined as dividing the length of the adjacent side by the length of the hypotenuse.
In computer science, a similarity metric named after this function can be used to find two vectors that are the most similar.
cosine [do not accept or prompt on “sine”; do not accept “hyperbolic cosine”]