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2. Law of sines - Wikipedia

   en.wikipedia.org/wiki/Law_of_sines

   In trigonometry, the law of sines, sine law, sine formula, or sine rule is an equation relating the lengths of the sides of any triangle to the sines of its angles. According to the law, ⁡ = ⁡ = ⁡ =, where a, b, and c are the lengths of the sides of a triangle, and α, β, and γ are the opposite angles (see figure 2), while R is the radius of the triangle's circumcircle.

3. List of trigonometric identities - Wikipedia

   en.wikipedia.org/wiki/List_of_trigonometric...

   The fact that the triple-angle formula for sine and cosine only involves powers of a single function allows one to relate the geometric problem of a compass and straightedge construction of angle trisection to the algebraic problem of solving a cubic equation, which allows one to prove that trisection is in general impossible using the given tools.

4. Sine and cosine - Wikipedia

   en.wikipedia.org/wiki/Sine_and_cosine

   In mathematics, sine and cosine are trigonometric functions of an angle.The sine and cosine of an acute angle are defined in the context of a right triangle: for the specified angle, its sine is the ratio of the length of the side that is opposite that angle to the length of the longest side of the triangle (the hypotenuse), and the cosine is the ratio of the length of the adjacent leg to that ...

5. Outline of trigonometry - Wikipedia

   en.wikipedia.org/wiki/Outline_of_trigonometry

   The following outline is provided as an overview of and topical guide to trigonometry: Trigonometry – branch of mathematics that studies the relationships between the sides and the angles in triangles. Trigonometry defines the trigonometric functions, which describe those relationships and have applicability to cyclical phenomena, such as waves.

6. Trigonometry - Wikipedia

   en.wikipedia.org/wiki/Trigonometry

   With these functions, one can answer virtually all questions about arbitrary triangles by using the law of sines and the law of cosines. [33] These laws can be used to compute the remaining angles and sides of any triangle as soon as two sides and their included angle or two angles and a side or three sides are known.

7. Texans get 2 points on rare blocked extra point return in ...

   www.aol.com/texans-2-points-rare-blocked...

   Houston's D'Angelo Ross returned a blocked extra point for two points in the fourth quarter of the Texans' wild-card playoff game against the Los Angeles Chargers Saturday. The rare play came ...

8. YouTube's Ms. Rachel takes on first words and potty training ...

   www.aol.com/youtubes-ms-rachel-takes-first...

   She slows down and uses an upbeat voice because that's what helps kids learn best. "When you speak to a child naturally, actually, everywhere around the world, you do slow down. Your voice goes up.

9. Guatemala open to dialogue with Trump team on accepting ...

   www.aol.com/news/guatemala-open-dialogue-trump...

   Guatemala said it is open to engaging in a "constructive and respectful dialogue" with the new administration of incoming U.S. President Donald Trump, though no agreement has been made on ...