Vector Algebra
Angle Between Vector and Line Using Projection
nta_pyq_2023_apr
Grade 12
Question:
Let $\lambda\in\mathbb{Z}$, $\vec{a}=\lambda\hat{i}+\hat{j}-\hat{k}$. If $|\vec{a}\times(2\hat{i}-\hat{j}+\hat{k})|^2+...$
First option
Second option
Third option
Fourth option
Step-by-Step Solution
Key Concept: Use cross product magnitude formula.
Answer is option (1).
Correct Answer: 1