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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. 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.

  4. Trigonometric interpolation - Wikipedia

    en.wikipedia.org/wiki/Trigonometric_interpolation

    In mathematics, trigonometric interpolation is interpolation with trigonometric polynomials.Interpolation is the process of finding a function which goes through some given data points.

  5. Small-angle approximation - Wikipedia

    en.wikipedia.org/wiki/Small-angle_approximation

    The sine and tangent small-angle approximations are used in relation to the double-slit experiment or a diffraction grating to develop simplified equations like the following, where y is the distance of a fringe from the center of maximum light intensity, m is the order of the fringe, D is the distance between the slits and projection screen ...

  6. Help:Displaying a formula - Wikipedia

    en.wikipedia.org/wiki/Help:Displaying_a_formula

    Spaces within a formula must be directly managed (for example by including explicit hair or thin spaces). Variable names must be italicized explicitly, and superscripts and subscripts must use an explicit tag or template. Except for short formulas, the source of a formula typically has more markup overhead and can be difficult to read.

  7. Remains Found in Pa. Over 50 Years Ago Identified as Missing ...

    www.aol.com/lifestyle/remains-found-pa-over-50...

    Related: Human Remains Identified as Portland Teenager Who Went Missing 54 Years Ago State Trooper Ian Keck also shared at the press conference that identifying Ruth was a key step in the ...

  8. Tan (color) - Wikipedia

    en.wikipedia.org/wiki/Tan_(color)

    This is an accepted version of this page This is the latest accepted revision, reviewed on 20 November 2024. Pale tone of brown Tan Common connotations skin color, sunbathing Color coordinates Hex triplet #D2B48C sRGB B (r, g, b) (210, 180, 140) HSV (h, s, v) (34°, 33%, 82%) CIELCh uv (L, C, h) (75, 39, 56°) Source X11 ISCC–NBS descriptor Grayish yellow B: Normalized to [0–255] (byte ...

  9. Inverse trigonometric functions - Wikipedia

    en.wikipedia.org/wiki/Inverse_trigonometric...

    So for example, by using the equality ⁡ = ⁡, the equation ⁡ = can be transformed into ⁡ =, which allows for the solution to the equation ⁡ = (where :=) to be used; that solution being: = ⁡ +, which becomes: = ⁡ + where using the fact that () = and substituting := proves that another solution to ⁡ = is: = + ⁡ + +.