Question

If $|\overrightarrow{a}|=3,|\overrightarrow{b}|=4$ and $|\overrightarrow{a}-\overrightarrow{b}|=\sqrt7$, then $\overrightarrow{a}\cdot\overrightarrow{b}$ is equal to

• A. 7
• B. 8
• C. 9
• D. 10
• E. 12

Answer 1

Answer: (C)

9

Answer 2

The correct option is (C): 9