Let |A₁| = 3, |A₂| = 5 and |A₁ + A₂| = 5... | Vectors JEE Main

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JEE MAIN 2019

08-04-2019 S2

Question

Let $\left|\overrightarrow{A_1}\right|=3,\left|\overrightarrow{A_2}\right|=5$ and $\left|\overrightarrow{A_1}+\overrightarrow{A_2}\right|=5$. The value of $\left(2 \overrightarrow{A_1}+3 \overrightarrow{A_2}\right) \cdot\left(3 \overrightarrow{A_1}-2 \overrightarrow{A_2}\right)$ is:

Select the correct option:

A

– 106.5

B

– 118.5

C

– 99.5

D

– 112.5

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

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