Use the Law of Cosines to Find $x$

question 39

Essay

Use the Law of Cosines to find $x$ .

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Definitions:

Coefficient Of Determination

A statistical measure, often denoted as R^2, that represents the proportion of the variance in the dependent variable that is predictable from the independent variables in a regression model.

Stepwise Regression

An approach to developing regression models where the identification of forecasting variables is performed automatically.

Independent Variables

Variables that are manipulated or changed in an experiment to observe their effect on dependent variables.

Adjusted Coefficient

A modified version of a coefficient that accounts for the complexity of the model or for variables not included in the model.