The direction cosine of a line which is bot to two perpendicular lines whose direction cosines are (l_1,m_1,n_1) a

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Q 1337223182.     The direction cosine of a line which is bot to two perpendicular lines whose direction cosines are (l_1,m_1,n_1) and (l_2,m_2,n_2) is ?
A

(m_1n_2-m_2n_1, n_1l_2-l_1n_2, l_1m_2-l_2m_1)

B

(l_1+l_2, m_1+m_2, n_1+n_2)

C

(l_1-l_2, m_1-m_2, n_1-n_2)

D

None of these

HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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