Find $\mathbf { a } \cdot \mathbf { b }$ , Given That

question 92

Multiple Choice

Find $\mathbf { a } \cdot \mathbf { b }$ , given that $| \mathbf { a } |$ = 2, $| \mathbf { b } |$ = 3, and the angle between a and b is $\frac { 5 \pi } { 6 }$ .

• A) \(3 \sqrt { 2 }\)
• B)3
• C) \(3 \sqrt { 3 }\)
• D) \(2 \sqrt { 3 }\)
• E) \(- 3 \sqrt { 2 }\)
• F)-3
• G) \(- 3 \sqrt { 3 }\)
• H) \(- 2 \sqrt { 3 }\)

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