In the paper, the authors find series expansions and identities for positive integer powers of inverse (hyperbolic) sine and tangent, for composite of incomplete gamma function with inverse hyperbolic ...

As a tangent is a straight line it is described by an equation in the form \(y - b = m(x - a)\). You need both a point and the gradient to find its equation. You are usually given the point - it's ...

It has been generally held that the first appearance of the tangent function was in the form of the shadow tables used by Moslem astronomers of the ninth century A. D. Suggestions of the use of ...