In a Cartesian plane, the x-axis is called
Correct answer: D. Horizontal axis.
- A. Z-axis.
- B. Vertical axis.
- C. Rotational axis.
- D. Horizontal axis.
Explanation
In a Cartesian plane, the x-axis is known as the horizontal axis because it runs horizontally from left to right. The y-axis, on the other hand, is the vertical axis. The z-axis is used in three-dimensional coordinate systems, and the term 'rotational axis' is not applicable in this context.
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About Rectangular Components
A vector is resolved into perpendicular horizontal and vertical components using trigonometric relations, usually as Ax = A cos θ and Ay = A sin θ when θ is measured from the horizontal. Questions involve signs in different quadrants, reconstructing a resultant from components, and using components to analyse equilibrium.
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