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Choose the correct option.
If and and , find such that is perpendicular to is
If $\vec{a} = \hat{i} + 2\hat{j} + 3\hat{k}$ and $\vec{b} = -\hat{i} + 2\hat{j} + \hat{k}$ and $\vec{c} = 3\hat{i} + \hat{j}$, find $t$ such that $\vec{a} + t\vec{b}$ is perpendicular to $\vec{c}$ is
- (a)$0$
- (b)$5$
- (c)$4$
- (d)$2$
Answer
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From ISC 2023 Specimen Mathematics Paper 1, question 15(i).
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