Use Sum and Difference Formulas for Cosines and Sines
- $\sin 195 ^ { \circ } \cos 75 ^ { \circ } - \cos 195 ^ { \circ } \sin 75 ^ { \circ }$

question 82

Multiple Choice

Use Sum and Difference Formulas for Cosines and Sines
- $\sin 195 ^ { \circ } \cos 75 ^ { \circ } - \cos 195 ^ { \circ } \sin 75 ^ { \circ }$

• A) \(\frac { \sqrt { 3 } } { 2 }\)
• B) \(- \frac { 1 } { 2 }\)
• C) \(\frac { 13 } { 4 }\)
• D) \(- \frac { \sqrt { 3 } } { 2 }\)

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Definitions:

Standard Deviations

A standard used to assess the level of heterogeneity or diversity among values in a dataset.

Boxplots

A graphical representation of data that shows the distribution's five-number summary: minimum, first quartile, median, third quartile, and maximum.

Coefficients of Contrast

Statistic coefficients used to compare differences between means within groups versus the overall mean, often used in analysis of variance.

Standard Error

A statistical measure that estimates the accuracy with which a sample distribution represents a population by quantifying the variation between sample means if the experiment were repeated.