Use Vectors to Find the Measure of the Angle at Vertex

question 104

Multiple Choice

Use vectors to find the measure of the angle at vertex $B$ of triangle $A B C$ , when $A = ( 6,1 ) , B = ( - 1,3 )$ , and $C = ( - 4 , - 5 )$ . Round answer to two decimal places.

• A) \(92.52\)
• B) \(94.61 ^ { \circ }\)
• C) \(95.95\)
• D) \(93.42\)
• E) \(97.13 ^ { \circ }\)

Understand the role of dummy variables in representing qualitative predictors within regression models.

Learn how stepwise regression procedures can be used to address multicollinearity and model selection.

Grasp the use and interpretation of the F-statistic and p-values in regression analysis.

Know the consequences and challenges of incorporating multiple predictors in regression models.

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