Vector Algebra
Oswaal
CBSE
Grade 12
Question:
If $\vec{a} = 2\hat{i} + 2\hat{j} + 3\hat{k}, \vec{b} = -\hat{i} + 2\hat{j} + \hat{k}$ and $\vec{c} = 3\hat{i} + \hat{j}$ such that $\vec{a} + \lambda\vec{b} \perp \vec{c}$, find $\lambda$.
Step-by-Step Solution
Key Concept: \lambda = 8.
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Correct Answer:
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