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

Question 179

Multiple Choice

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


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

Correct Answer:

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