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2. List of trigonometric identities - Wikipedia

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

   A formula for computing the trigonometric identities for the one-third angle exists, but it requires finding the zeroes of the cubic equation 4x 3 − 3x + d = 0, where is the value of the cosine function at the one-third angle and d is the known value of the cosine function at the full angle.

3. Proofs of trigonometric identities - Wikipedia

   en.wikipedia.org/wiki/Proofs_of_trigonometric...

   For example, the sine of angle θ is defined as being the length of the opposite side divided by the length of the hypotenuse. The six trigonometric functions are defined for every real number, except, for some of them, for angles that differ from 0 by a multiple of the right angle (90°). Referring to the diagram at the right, the six ...

4. Identity (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Identity_(mathematics)

   Visual proof of the Pythagorean identity: for any angle , the point (,) = (⁡, ⁡) lies on the unit circle, which satisfies the equation + =.Thus, ⁡ + ⁡ =. In mathematics, an identity is an equality relating one mathematical expression A to another mathematical expression B, such that A and B (which might contain some variables) produce the same value for all values of the variables ...

5. File:Visual demonstration of the double-angle trigonometric ...

   en.wikipedia.org/wiki/File:Visual_demonstration...

   You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

6. Us (2019 film) - Wikipedia

   en.wikipedia.org/wiki/Us_(2019_film)

   Us premiered at South by Southwest on March 8, 2019, and was theatrically released in the United States on March 22, 2019, by Universal Pictures. It was a critical and commercial success, grossing $256 million worldwide against a budget of $20 million, and received praise for Peele's screenplay and direction, Nyong'o's performance, and Michael ...

7. Perspective (2019 film) - Wikipedia

   en.wikipedia.org/wiki/Perspective_(2019_film)

   Perspective has received rave reviews from critics. Porn critics rated the film as the best of 2019 and one of the best of the decade. The film was nominated for over a dozen industry awards winning a handful. The film was nominated for six AVN Awards and won a show best three awards at the 37th AVN Awards show.

8. Assimilate - Wikipedia

   en.wikipedia.org/wiki/Assimilate

   Assimilate is a 2019 American science fiction horror film directed by John Murlowski and starring Joel Courtney, Andi Matichak, and Calum Worthy also with Mason McNulty and Cam Gigandet. [ 1 ] [ 2 ] [ 3 ] It is a loose and unofficial adaptation of Jack Finney 's 1954 novel The Body Snatchers .

9. Shaft (2019 film) - Wikipedia

   en.wikipedia.org/wiki/Shaft_(2019_film)

   Samuel L. Jackson as John Shaft II, a private investigator and ex-NYPD Detective, father of JJ Shaft and son [a] of John Shaft Sr; Jessie T. Usher as John "J.J." Shaft, III, an FBI computer analyst, estranged son of John Shaft and grandson of John Shaft Sr, whom he meets for the first time since he was a baby.