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Three Dimensional Geometry — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsThree Dimensional Geometry1 Mark
MCQ
Let a vector $\vec{\text{r}}$ make angles $60^\circ , 30^\circ $ with it and $y-$axes respectively. Find the angle $\vec{\text{r}}$ make with $z-$axis:
  • A
    $30^\circ $
  • B
    $60^\circ $
  • ✓
    $90^\circ $
  • D
    $120^\circ $
✓

Answer

Correct option: C.
$90^\circ $

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