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CBSE XII
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Find a unit vector in the direction of \( \overrightarrow a = 3\hat i - 2\hat j + 6\hat k \)
cbse
class12
modelpaper
2008-1
sec-a
q8
math
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asked
Dec 20, 2012
by
thanvigandhi_1
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Find a unit vector in the direction of \( \overrightarrow a = 3\hat i - 2\hat j + 6\hat k \)
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Find a unit vector in the direction of the vector \( \overrightarrow a = -2\hat i + \hat j + 2\hat k\)
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For what values of p, $ \overrightarrow a = (2\hat i + 6\hat j + 3\hat k)$ p is a unit vector.
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If \( \overrightarrow a = \hat i + \hat j + \hat k \: and \: \overrightarrow b = \hat j - \hat k \) find a vector \( \overrightarrow c \) such that \( \overrightarrow a\) x \( \overrightarrow c = \overrightarrow b \) and \( \overrightarrow a . \overrightarrow c = 3\)
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Find a unit vector parallel to the sum of the vectors \( \overrightarrow a = 2\hat i + 4\hat j - 5\hat k \: and \: \overrightarrow b = \hat i + 2\hat j - 3\hat k \)
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Jan 28, 2013
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For what value of \( \lambda\) are the vectors \( \overrightarrow a = 2\hat i + \lambda\hat j + \hat k \) and \( \overrightarrow b = \hat i - 2\hat j + 3\hat k \) perpendicular to each other?
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Find the angle between the vectors : \( \overrightarrow a = \hat i - \hat j + \hat k \) and \( \overrightarrow b = \hat i + \hat j - \hat k \)
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Dec 20, 2012
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