| Radical
Sign |
A
symbol used when taking the root of a number. |
| Radicand
|
The
number under the radical sign in a radical expression. |
| Radius
Vector |
A
straight line connecting the origin and a point on the terminal
arm of an angle drawn in standard position. |
| Random
Sample |
A
sample where each item in the population has an equal opportunity
to be selected. |
| Range |
The
y-coordinates of the set of points on a graph.
The
output in a function or relation. |
| Range |
In
data analysis, the difference between the largest and the smallest
members of a data set. |
| Rational
Number |
A
number written as a ratio a/b; where b cannot equal zero. |
| Rationalizing
the Denominator |
A
process used to eliminate terms containing radicals from the
denominator of an expression. |
| Reference
Angle |
The
positive acute angle formed by the terminal arm of angle theta
and the x-axis. |
| Relation |
A
rule that gives an output value for every input value.
A
set of ordered pairs. |
| Remainder |
When
dividing one quantity by another, if the quantities do not divide
evenly, the amount left over is called the remainder. |
| Right
Triangle |
A
triangle that contains one right angle. |
| Root(s) |
The
solution(s) to an equation. Also called the zeros or the x-intercepts
of the equation. |
| Root
Index |
The
number found in the notch of the radical sign. If no number
is written it is considered to be a 2 meaning to take the square
root of the radicand. |
