The remainder is the number left over when integer division doesn't divide evenly, and it has to be smaller than the divisor and can't be negative.
Slope is mainly used to measure how slanted a line is, and it has a direct relationship with the angle of inclination. Understanding this is important for grasping the concept. Simply put, the slope is a numerical representation of how much a line tilts relative to the x-axis, and it's usually represented by the letter k.
Cosine is a type of trigonometric function in math. Simply put, in a right triangle, it's the ratio of the length of a sharp angle's adjacent side to the length of the hypotenuse.
An oblique triangle is a triangle that doesn't have a right angle, including both acute and obtuse types.
Cosmology is a branch of astronomy that studies the overall structure, evolution, and origin of the universe. Its core content includes the standard model made up of dark energy and dark matter, and it reveals the large-scale features of the universe through observations and theory. This field combines physics, philosophy, and other areas, is based on general relativity, and relies on observational techniques like cosmic microwave background radiation and supernova redshift to test theoretical models.
Imaginary numbers are a special kind of number in math, used to represent the square root of negative numbers. The key is the imaginary unit i, which satisfies i² = -1. They combine with real numbers to form complex numbers, giving solutions to equations that couldn’t be solved before.
A circle is a type of geometric shape, defined as the figure formed when a line segment rotates all the way around one of its fixed endpoints in a plane.
In math, rotation refers to the movement of a shape turning around a fixed point by a certain angle, without changing its shape or size.
Rotational symmetry means that a shape can match up with itself after being rotated around its center by a certain angle.