Evaluate the Expression Using the Concept of a Reference Angle $\sin \left( - 150 ^ { \circ } \right)$

question 19

Multiple Choice

Evaluate the expression using the concept of a reference angle. $\sin \left( - 150 ^ { \circ } \right)$

• A) \(\frac { \sqrt { 6 } } { 6 }\)
• B) \(\frac { \sqrt { 6 } } { 2 }\)
• C) \(\frac { 1 } { 2 }\)
• D) \(- \frac { 1 } { 2 }\)
• E) \(- \frac { 1 } { 6 }\)

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Definitions:

Marginal Means

The mean values of a variable in a dataset at each level of another variable, especially in the context of factor analysis or ANOVA, used for understanding group differences.

Dependent Variable

The variable being tested and measured in an experiment, its outcome depends on the influence of the independent variable.

Factorial Research Design

Research design consisting of all possible combinations of two or more independent variables.

Marginal Mean

The arithmetic mean of values for a particular variable, considering the impact of covariates in the analysis.