The values of a so that the vectors (a\hat{i}+(a-1)\hat{j}+3... | Mathematics | SolveeIt | Solveeit

Today, August 18

Question

The values of a so that the vectors $a\hat{i}+(a-1)\hat{j}+3\hat{k}$ and $(a+2)\hat{i}+a\hat{j}-2\hat{k}$ are perpendicular, are

A

$\frac{3}{2},-2$

B

$2,\frac{3}{2}$

C

$-2,\frac{-3}{2}$

D

$2,\frac{-3}{2}$

E

$-4,\frac{3}{2}$

Answer

$\frac{3}{2},-2$

Explanation

Solution

The correct option is (A): $\frac{3}{2},-2$