The direction ratios of the bisector of the angle between the lines whose direction cosines are `l_1, m_1, n_1; l_2,

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Q 2186778677.     The direction ratios of the bisector of the angle between

the lines whose direction cosines are `l_1, m_1, n_1; l_2, m_2, n_2`

are
A

`l_1 + l_2, m_1 + m_2, n_1 + n_2`

B

`l_1 - l_2, m_1 - m_2, n_1 - n_2`

C

`l_1 m_2 -l_2 m_1 , m_1 n_2 - m_2 n_1, n_1l_2 -n_2 l_1`

D

`l_1 m_2 + l_2 m_1 , m_1 n_2 + m_2 n_1, n_1l_2 +n_2 l_1`

HINT


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

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