Find A· B
- $$\mathbf { a } = 10 \mathbf { i } + 6 \mathbf { j } , \quad \mathbf { b } = 5 \mathbf { i } + 3 \mathbf { j }$$

question 179

Multiple Choice

Find a· b.
- $$\mathbf { a } = 10 \mathbf { i } + 6 \mathbf { j } , \quad \mathbf { b } = 5 \mathbf { i } + 3 \mathbf { j }$$

• A) \(\langle 50,18 \rangle\)
• B) \(- 32\)
• C) \(\langle 15,9 \rangle\)
• D) 68

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