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Recent questions tagged direction cosines

The cosine of angle between the medians drawn from vertices of isosceles rt. angled triangle is?

asked Jan 12, 2014 by rvidyagovindarajan_1

1 answer

The direction cosine of a line which is $\perp$ to two perpendicular lines whose direction cosines are $(l_1,m_1,n_1)\:\:and\:\:(l_2,m_2,n_2)$ is ?

asked Jan 8, 2014 by rvidyagovindarajan_1

1 answer

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