MCQ
If $\alpha, \beta, \gamma$ are direction angles of a line, then
- A$0 \leq \alpha, \beta, \gamma \leq \frac{\pi}{2}$
- ✓$0 \leq \alpha, \beta, \gamma \leq \pi$
- C$0<\alpha, \beta, \gamma<\frac{\pi}{2}$
- D$0<\alpha, \beta, \gamma<\pi$
✓
Answer
Correct option: B.
$0 \leq \alpha, \beta, \gamma \leq \pi$
(B) If $\alpha, \beta, \lambda$ are direction angles of any vector $\overline{ OL }$, then those of $\overline{ OL ^{\prime}}$ are $\pi-\alpha, \pi-\beta$, $\pi-\gamma$ respectively
$\therefore \quad$ correct answer is option (B).
$\therefore \quad$ correct answer is option (B).
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