Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
According to the question, we have to find the trigonometric expressions using the value of .
As the above expression is from trigonometric expression and it can be defined as the trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables.
The above expression can be solved by sing the formula of which is as follows,
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