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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. Radian - Wikipedia

    en.wikipedia.org/wiki/Radian

    Hence an angle of 1.2 radians would be written today as 1.2 rad; archaic notations include 1.2 r, 1.2 rad, 1.2 c, or 1.2 R. In mathematical writing, the symbol "rad" is often omitted. When quantifying an angle in the absence of any symbol, radians are assumed, and when degrees are meant, the degree sign ° is used.

  4. Degree (angle) - Wikipedia

    en.wikipedia.org/wiki/Degree_(angle)

    ⁠ π / 4 ⁠ or ⁠ 𝜏 / 8 ⁠ rad 45° 50 g ⁠ 1 / 2 π or 𝜏 ⁠ turn 1 rad approx. 57.3° approx. 63.7 g ⁠ 1 / 6 ⁠ turn ⁠ π / 3 ⁠ or ⁠ 𝜏 / 6 ⁠ rad 60° ⁠66 + 2 / 3 ⁠ g ⁠ 1 / 5 ⁠ turn ⁠ 2 π or 𝜏 / 5rad 72° 80 g ⁠ 1 / 4 ⁠ turn ⁠ π / 2 ⁠ or ⁠ 𝜏 / 4 ⁠ rad 90° 100 g ⁠ 1 / 3 ⁠ turn ...

  5. Leaf angle distribution - Wikipedia

    en.wikipedia.org/wiki/Leaf_angle_distribution

    The leaf angle distribution (or LAD) of a plant canopy refers to the mathematical description of the angular orientation of the leaves in the vegetation.Specifically, if each leaf is conceptually represented by a small flat plate, its orientation can be described with the zenith and the azimuth angles of the surface normal to that plate.

  6. Gradian - Wikipedia

    en.wikipedia.org/wiki/Gradian

    ⁠ π / 4 ⁠ or ⁠ 𝜏 / 8 ⁠ rad 45° 50 g ⁠ 1 / 2 π or 𝜏 ⁠ turn 1 rad approx. 57.3° approx. 63.7 g ⁠ 1 / 6 ⁠ turn ⁠ π / 3 ⁠ or ⁠ 𝜏 / 6 ⁠ rad 60° ⁠66 + 2 / 3 ⁠ g ⁠ 1 / 5 ⁠ turn ⁠ 2 π or 𝜏 / 5rad 72° 80 g ⁠ 1 / 4 ⁠ turn ⁠ π / 2 ⁠ or ⁠ 𝜏 / 4 ⁠ rad 90° 100 g ⁠ 1 / 3 ⁠ turn ...

  7. Rad (radiation unit) - Wikipedia

    en.wikipedia.org/wiki/Rad_(radiation_unit)

    A dose of 100 to 200 rad delivered to the entire body in less than a day may cause acute radiation syndrome (ARS), but is usually not fatal. Doses of 200 to 1,000 rad delivered in a few hours will cause serious illness, with poor prognosis at the upper end of the range. Whole body doses of more than 1,000 rad are almost invariably fatal. [3]

  8. Inverse trigonometric functions - Wikipedia

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

    The most common convention is to name inverse trigonometric functions using an arc- prefix: arcsin(x), arccos(x), arctan(x), etc. [1] (This convention is used throughout this article.) This notation arises from the following geometric relationships: [ citation needed ] when measuring in radians, an angle of θ radians will correspond to an arc ...

  9. Lambda calculus - Wikipedia

    en.wikipedia.org/wiki/Lambda_calculus

    0 := λfx.x 1 := λfx.f x 2 := λfx.f (f x) 3 := λfx.f (f (f x)) A Church numeral is a higher-order function—it takes a single-argument function f, and returns another single-argument function. The Church numeral n is a function that takes a function f as argument and returns the n-th composition of f, i.e. the function f composed with ...