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Теорема косинусов Теорема косинусов
Теорема косинусов — теорема евклидовой геометрии, обобщающая теорему Пифагора на произвольные плоские треугольники. Википедия
In trigonometry, the law of cosines relates the lengths of the sides of a triangle to the cosine of one of its angles. For a triangle with sides a ...
Use the Cosine Rule to find unknown sides and angles; Combine trigonometry skills to solve problems. Each topic is introduced with a theory section including ...
Revise trigonometric ratios of sine, cosine and tangent and calculate angles in right-angled triangles with this Bitesize GCSE Maths Edexcel guide.
the Law of Cosines (also called the Cosine Rule) says: c2 = a2 + b2 − 2ab cos(C). It helps us solve some triangles. Let's see how to use it.
The cosine rule (or the law of cosines) is a formula which can be used to calculate the missing sides of a triangle or to find a missing angle. To do this we ...
The cosine rule, also known as the law of cosines, relates all 3 sides of a triangle with an angle of a triangle. It is most useful for solving for missing ...
Revise how to use the sine and cosine rules to find missing angles and sides of triangles as part of National 5 Maths.
The cosine rule is used when we are given either a) three sides or b) two sides and the included angle. 1. The sine rule. Study the triangle ABC shown below.
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