trig identites

Term 1: LaTeX
Definition 1: A typesetting system commonly used for producing technical and scientific documents.
Term 2: $rac{1}{x+1}$
Definition 2: A mathematical expression representing the function of 1 divided by (x + 1).
Term 3: $an(x)$
Definition 3: The tangent function in trigonometry, which is the ratio of the opposite side to the adjacent side in a right triangle.
Term 4: $6.02 imes 10^{23}$
Definition 4: Avogadro's number, representing the number of atoms or molecules in one mole of a substance.
Term 5: $P(A|B)$
Definition 5: The probability of event A occurring given that event B has occurred.
Term 6: $N( ext{mean}, ext{variance})$
Definition 6: Notation for a normal distribution with specified mean and variance.
Term 7: $H_2O$
Definition 7: Chemical formula for water, representing two hydrogen atoms and one oxygen atom.
Term 8: $ext{m/s}$
Definition 8: Meters per second, the unit for measuring velocity.