Mathematics · 2019
JEE Main · 10 January 2019, Shift 1 · Q84
Let A be a point on the line r =(1-3 μ) i +(μ-1) j +(2+5 μ) k and B(3, 2, 6) be a point in the space. Then the value of μ for which the vector A B is…
Let A be a point on the line $\displaystyle \overrightarrow{\mathrm{r}}=(1-3 \mu) \hat{i}+(\mu-1) \hat{j}+(2+5 \mu) \hat{k}$ and B($\displaystyle 3$, $\displaystyle 2$, $\displaystyle 6$) be a point in the space. Then the value of $\displaystyle \mu$ for which the vector $\displaystyle \overrightarrow{A B}$ is parallel to the plane $\displaystyle x-4 y+3 z=1$ is :
Official answer
(2)
$\displaystyle \frac{1}{4}$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.