If and only if (necessary and sufficient condition).
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in math, it stands for meters.
U stands for Unit. T stands for Ten. H stands for hundred.
sin stands for sine cos stands for cosine and tan stands for tangent
i am pretty sure that the process of math is PEMDAS.the p stands for parenthasese,the e stands for expnents,the m stands for multiplcation,the d stands for division,the a stands for addition,and the s stands for subtraction.when you have a long number sentence,and u keep getting the wrong answer u just do order of operations which is PEMDAS.
GCD stands for Greatest Common Divisor.