Question

Let$|\vec{a}|=2, |\vec{b}|=3$ and the angle between the vectors $\vec{a}$ and $\vec{b}$ be $\frac{π}{4}$. Then $|(\vec{a}+2\vec{b})×(2\vec{a}-3\vec{b})|^2$ is equal to

• A. 441
• B. 882
• C. 482
• D. 841

Answer 1

Answer: (B)

882

Answer 2

The correct answer is (B) : 882