Sine {Ans: for an acute angle in a right triangle, the ratio of the opposite side to the hypotenuse; abbreviated as sin}Absolute value {Ans: the distance from a number to zero on the number line}Product {Ans: the answer to a multiplication problem}Reflex angle {Ans: an angle that measures more than 180 degrees and less than 360 degrees}Arc {Ans: a portion of the circumference of a circle}Square root {Ans: one of two equal factors of a number}