Which of the following statements are correct ? (A) Direction ratios of the line $\frac{x-1}{2}=\frac{y+2}{3}=\frac{z-3}{4}$ are 2, 3, 4 (B) Direction ratio of the line $\frac{x-1}{2}=\frac{2-y}{7}=\frac{2z-1}{6}$ are 2, -7, 3 (C) Direction cosines of x axis are 0, 1, 0 (D) Direction ratios of the line joining the point (1, 2, -3) and (4, 5, 6) are 1, 1, 3. (E) Direction cosines of a line which makes equal angles with the coordinates axes are $\frac{1}{3}, \frac{-1}{3}, \frac{1}{3}$ Choose the correct answer from the options given below: |
(A), (B), (C) Only (A), (B), (D) Only (B), (D), (E) Only (D), (E) Only |
(A), (B), (D) Only |
The correct answer is Option (2) → (A), (B), (D) Only for (C) direction ratio of x axis is (1, 0, 0) Not (0, 1, 0) (E) Direction cosines of lines which makes equal angles with axis is $\frac{1}{\sqrt{3}}, \frac{1}{\sqrt{3}}, \frac{1}{\sqrt{3}}$ Not $\frac{1}{3}, \frac{-1}{3}, \frac{1}{3}$ |