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functions of an angle that relate the size of the angle to the length of the sides of a triangle. The functions sine, cosine and tangent are the most important functions in this group.
the axis of symmetry; or the line about which a figure is reflected.
numbers that are not real numbers, such as the square roots of negative numbers. Imaginary...
the amount (or future value) at the end of a specified period of time.
the point on a line that is exactly halfway between two given points.
a branch of geometry that is concerned with the use of algebra to define or locate a point on a...