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  2. Identity line - Wikipedia

    en.wikipedia.org/wiki/Identity_line

    The Keynesian cross diagram includes an identity line to show states in which aggregate demand equals output. In a 2-dimensional Cartesian coordinate system, with x representing the abscissa and y the ordinate, the identity line [1] [2] or line of equality [3] is the y = x line. The line, sometimes called the 1:1 line, has a slope of 1. [4]

  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. Cartesian coordinate system - Wikipedia

    en.wikipedia.org/wiki/Cartesian_coordinate_system

    For example, a circle of radius 2, centered at the origin of the plane, may be described as the set of all points whose coordinates x and y satisfy the equation x 2 + y 2 = 4; the area, the perimeter and the tangent line at any point can be computed from this equation by using integrals and derivatives, in a way that can be applied to any curve.

  5. 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 ...

  6. Inverse function - Wikipedia

    en.wikipedia.org/wiki/Inverse_function

    If f(x)=y, then g(y)=x. The function g must equal the inverse of f on the image of f, but may take any values for elements of Y not in the image. A function f with nonempty domain is injective if and only if it has a left inverse. [21] An elementary proof runs as follows: If g is the left inverse of f, and f(x) = f(y), then g(f(x)) = g(f(y ...

  7. Here's what 3 toys were inducted into the National Toy Hall ...

    www.aol.com/lifestyle/heres-3-toys-were-inducted...

    Hasbro released its first set of Transformers in 1984. The toys were marketed with a backstory, supported by a Marvel comic book series, a cartoon television series, animated movies, video games ...

  8. Club World Cup 2025: Teams, schedule, stadiums, groups and ...

    www.aol.com/sports/club-world-cup-2025-teams...

    The 2025 FIFA Club World Cup is a 32-team tournament featuring top professional clubs from around the world, set to begin June 15, 2025, in the U.S. (Photo courtesy of FIFA)

  9. Line (geometry) - Wikipedia

    en.wikipedia.org/wiki/Line_(geometry)

    A number line, with variable x on the left and y on the right. Therefore, x is smaller than y. A point on number line corresponds to a real number and vice versa. [15] Usually, integers are evenly spaced on the line, with positive numbers are on the right, negative numbers on the left.

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