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  2. Mnemonics in trigonometry - Wikipedia

    en.wikipedia.org/wiki/Mnemonics_in_trigonometry

    Signs of trigonometric functions in each quadrant. All Students Take Calculus is a mnemonic for the sign of each trigonometric functions in each quadrant of the plane. The letters ASTC signify which of the trigonometric functions are positive, starting in the top right 1st quadrant and moving counterclockwise through quadrants 2 to 4.

  3. Quadrant (plane geometry) - Wikipedia

    en.wikipedia.org/wiki/Quadrant_(plane_geometry)

    The four quadrants of a Cartesian coordinate system. The axes of a two-dimensional Cartesian system divide the plane into four infinite regions, called quadrants, each bounded by two half-axes. The axes themselves are, in general, not part of the respective quadrants.

  4. Cartesian coordinate system - Wikipedia

    en.wikipedia.org/wiki/Cartesian_coordinate_system

    The black dot shows the point with coordinates x = 2, y = 3, and z = 4, or (2, 3, 4). A Cartesian coordinate system for a three-dimensional space consists of an ordered triplet of lines (the axes ) that go through a common point (the origin ), and are pair-wise perpendicular; an orientation for each axis; and a single unit of length for all ...

  5. Circumplex model of group tasks - Wikipedia

    en.wikipedia.org/wiki/Circumplex_model_of_group...

    The four quadrants are as follows: Generating ideas or plans; Choosing a solution; Negotiating a solution to a conflict; Executing a task; To further differentiate the various goal-related group activities, McGrath further sub-divides these four categories, resulting in eight categories in total. The breakdown of these categories is as follows: 1.

  6. Quad chart - Wikipedia

    en.wikipedia.org/wiki/Quad_chart

    A quad chart is a form of technical documentation used to briefly describe an invention or other innovation through writing, illustration and/or photographs. [1] Such documents are described as "quad" charts because they are divided into four quadrants laid out on a landscape perspective.

  7. Multiview orthographic projection - Wikipedia

    en.wikipedia.org/wiki/Multiview_orthographic...

    Gaspard Monge's four quadrants and two planes. Modern orthographic projection is derived from Gaspard Monge's descriptive geometry. [4] Monge defined a reference system of two viewing planes, horizontal H ("ground") and vertical V ("backdrop"). These two planes intersect to partition 3D space into 4 quadrants, which he labeled: I: above H, in ...

  8. First Things First (book) - Wikipedia

    en.wikipedia.org/wiki/First_Things_First_(book)

    [4] [5] This is his 2x2 matrix: classifying tasks as urgent and non-urgent on one axis, and important or non-important on the other axis. His quadrant 2 (not the same as the quadrant II in a Cartesian coordinate system) has the items that are non-urgent but important. These are the ones he believes people are likely to neglect, but should focus ...

  9. Nolan Chart - Wikipedia

    en.wikipedia.org/wiki/Nolan_Chart

    The Nolan Chart in its traditional form. The Nolan Chart is a political spectrum diagram created by American libertarian activist David Nolan in 1969, charting political views along two axes, representing economic freedom and personal freedom.