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trigonometry, tangent half-angle formulas relate the tangent of half of an angle to trigonometric functions of the entire angle. The tangent of half an angle is...

the law of tangents or tangent rule is a statement about the relationship between the tangents of two angles of a triangle and the lengths of the opposing...

dissipation of electromagnetic energy (e.g. heat). It can be parameterized in terms of either the loss angle δ or the corresponding loss tangent tan(δ). Both...

calculus, the tangent half-angle substitution is a change of variables used for evaluating integrals, which converts a rational function of trigonometric...

In geometry, the tangent line (or simply tangent) to a plane curve at a given point is, intuitively, the straight line that "just touches" the curve at...

define an angle, which is the angle of the rays lying tangent to the respective curves at their point of intersection. The magnitude of an angle is called...

circular functions, angle functions or goniometric functions) are real functions which relate an angle of a right-angled triangle to ratios of two side lengths...

circles form the subject of several theorems, and play an important role in many geometrical constructions and proofs. Since the tangent line to a circle at...

between the tangent plane of the surface and another plane at right angles to the light rays. This means that the illumination angle of a certain point...

surface tangent on the liquid–vapor interface and the tangent on the solid–liquid interface at their intersection. It quantifies the wettability of a solid...

The law of tangents, or tangent rule, can be used to find a side or an angle when two sides and an angle or two angles and a side are known...

rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal. It is a special case of the...

tangent to one of the triangle's sides. The center of the incircle, called the incenter, can be found as the intersection of the three internal angle...

Proofs of trigonometric identities Prosthaphaeresis Pythagorean theorem Tangent half-angle formula Trigonometric number Trigonometry Uses of trigonometry...

known as phasors, a capacitor's dissipation factor is equal to the tangent of the angle between the capacitor's impedance vector and the negative reactive...

A central angle is an angle whose apex (vertex) is the center O of a circle and whose legs (sides) are radii intersecting the circle in two distinct points...

Pressure angle in relation to gear teeth, also known as the angle of obliquity, is the angle between the tooth face and the gear wheel tangent. It is more...

the tangent law of magnetism, which states that the tangent of the angle a compass needle makes is proportional to the ratio of the strengths of the two...

geometry, an inscribed angle is the angle formed in the interior of a circle when two chords intersect on the circle. It can also be defined as the angle subtended...

functions of the trigonometric functions (with suitably restricted domains). Specifically, they are the inverses of the sine, cosine, tangent, cotangent...