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Find the value of p if \( ( 2\hat i + 6\hat j + 27\hat k )\) x \( ( \hat i + 3\hat j + p\hat k ) = \overrightarrow 0. \)
cbse
class12
modelpaper
2009
sec-a
q8
math
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Dec 21, 2012
by
thanvigandhi_1
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Find the value of \( p\) if \( (2\hat i + 6\hat j + 27\hat k) \times (\hat i + 3\hat j + p\hat k) =0.\)
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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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Feb 2, 2013
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Find the projection of \( \overrightarrow a \) on \( \overrightarrow b \) if \( \overrightarrow a . \overrightarrow b = 8 \) and \( \overrightarrow b = 2\hat i + 6\hat j + 3\hat k \).
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Jan 9, 2013
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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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Feb 11, 2013
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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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Dec 20, 2012
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Find the value of \( \lambda \) for which the vectors \( \overrightarrow \alpha = 3\hat i + \hat j - 2\hat k \: and \: \overrightarrow b = \hat i + \lambda\hat j - 3\hat k \) are perpendicular to each other.
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Find the value of \( \lambda \) so that the vectors \( \overrightarrow a = 2\hat i + \lambda\hat j + \lambda\hat k \: and \: \overrightarrow b = \hat i - 2\hat j + 3\hat k\) are perpendicular.
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Jan 22, 2013
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cbse
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modelpaper
2012
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