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Fig. 1 – A triangle. The angles α (or A), β (or B), and γ (or C) are respectively opposite the sides a, b, and c.. In trigonometry, the law of cosines (also known as the cosine formula or cosine rule) relates the lengths of the sides of a triangle to the cosine of one of its angles.
However, the discriminant of this equation is positive, so this equation has three real roots (of which only one is the solution for the cosine of the one-third angle). None of these solutions are reducible to a real algebraic expression , as they use intermediate complex numbers under the cube roots .
The golden eagle (Aquila chrysaetos) is a bird of prey living in the Northern Hemisphere.It is the most widely distributed species of eagle.Like all eagles, it belongs to the family Accipitridae.
Eagle is the common name for the golden eagle, bald eagle, and other birds of prey in the family of the Accipitridae.Eagles belong to several groups of genera, some of which are closely related.
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Its stronghold is in the dehesa woodlands of central and south-west Spain, such as in Extremadura, Ciudad Real and areas in the north of Huelva and Seville's Sierra Norte. The Spanish imperial eagle is a resident species, unlike the partially migratory eastern imperial eagle. [ 11 ]
The uniqueness and the zeros of trigonometric series was an active area of research in 19th century Europe. First, Georg Cantor proved that if a trigonometric series is convergent to a function on the interval [,], which is identically zero, or more generally, is nonzero on at most finitely many points, then the coefficients of the series are all zero.
3D scan of skeleton. Aquila is the genus of true eagles.The genus name is Latin for "eagle", possibly derived from aquilus, "dark in colour". [1] It is often united with the sea eagles, buteos, and other more heavyset Accipitridae, but more recently they appear to be less distinct from the slenderer accipitrine hawks than previously believed.