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  2. Exact trigonometric values - Wikipedia

    en.wikipedia.org/wiki/Exact_trigonometric_values

    While trigonometric tables contain many approximate values, the exact values for certain angles can be expressed by a combination of arithmetic operations and square roots. The angles with trigonometric values that are expressible in this way are exactly those that can be constructed with a compass and straight edge , and the values are called ...

  3. 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.

  4. Trigonometric tables - Wikipedia

    en.wikipedia.org/wiki/Trigonometric_tables

    These two starting trigonometric values are usually computed using existing library functions (but could also be found e.g. by employing Newton's method in the complex plane to solve for the primitive root of z N − 1). This method would produce an exact table in exact arithmetic, but has errors in finite-precision floating-point arithmetic

  5. Trigonometric functions - Wikipedia

    en.wikipedia.org/wiki/Trigonometric_functions

    Basis of trigonometry: if two right triangles have equal acute angles, they are similar, so their corresponding side lengths are proportional.. In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) [1] are real functions which relate an angle of a right-angled triangle to ratios of two side lengths.

  6. Hannah Kobayashi Has Been Found a Month After Voluntarily ...

    www.aol.com/lifestyle/hannah-kobayashi-found...

    Hannah Kobayashi's family says she was "found safe" on Wednesday, Dec. 11, about a month after she walked into Mexico and vanished in what police have called a voluntary disappearance that made ...

  7. Trigonometry of a tetrahedron - Wikipedia

    en.wikipedia.org/wiki/Trigonometry_of_a_tetrahedron

    The following are trigonometric quantities generally associated to a general tetrahedron: The 6 edge lengths - associated to the six edges of the tetrahedron.; The 12 face angles - there are three of them for each of the four faces of the tetrahedron.

  8. NJ car crash victim with historic face transplant shares ...

    www.aol.com/news/nj-face-transplant-recipient...

    A New Jersey man who received a face transplant after being severely burned in a car wreck shared his engagement photos this week to an overwhelming outpouring of support.

  9. Fans Are Showing No Mercy After Subway Launches Their Most ...

    www.aol.com/fans-showing-no-mercy-subway...

    Regardless of what your thoughts are on Subway, you have to admit that the fast food chain proudly holds its footlong crown high.After solidifying its place in fast food lore with those beloved $5 ...