The unit vector parallel to the resultant of the vectors $\vec A = 4\hat i + 3\hat j + 6\hat k$ and $\vec B = - \hat i + 3\hat j - 8\hat k$ is
- A$\frac{1}{7}(3\hat i + 6\hat j - 2\hat k)$
- B$\frac{1}{7}(3\hat i + 6\hat j + 2\hat k)$
- C$\frac{1}{{49}}(3\hat i + 6\hat j - 2\hat k)$
- D$\frac{1}{{49}}(3\hat i - 6\hat j + 2\hat k)$
Similar Questions
$ABC$ is an equilateral triangle. Length of each side is $a$ and centroid is point $O$. Find $\overrightarrow{A B}+\overrightarrow{A C}=n \overrightarrow{A O}$ then $n = ........ $
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Two vectors having equal magnitudes of $x\, units$ acting at an angle of $45^o$ have resultant $\sqrt {\left( {2 + \sqrt 2 } \right)} $ $units$. The value of $x$ is
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- [AIIMS 2009]
What is the meaning of substraction of two vectors ?
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The resultant of two vectors at an angle $150^{\circ}$ is $10$ units and is perpendicular to one vector. The magnitude of the smaller vector is ....... units
The resultant of two vectors at an angle $150^{\circ}$ is $10$ units and is perpendicular to one vector. The magnitude of the smaller vector is ....... units
Match List$- I$ with List$- II.$
$[Image]$
Choose the correct answer from the options given below :
Match List$- I$ with List$- II.$
$[Image]$
Choose the correct answer from the options given below :
- [JEE MAIN 2021]