If two lines L1 and L2 are having direction cosines \(l_1,m_1,n_1 \,and \,l_2,m_2,n_2\) respectively, then what is the a
Posted: Wed Jul 13, 2022 8:09 pm
a) cotθ=\(\left |l_1 \,l_2+m_1 \,m_2+n_1 \,n_2\right |\)
b) sinθ=\(\left |l_1 \,l_2+m_1 \,n_2+n_1 \,m_2\right |\)
c) tanθ=\(\left |l_1 \,l_2+m_1 \,m_2+n_1 \,n_2\right |\)
d) cosθ=\(\left |l_1 \,l_2+m_1 \,m_2+n_1 \,n_2\right |\)
b) sinθ=\(\left |l_1 \,l_2+m_1 \,n_2+n_1 \,m_2\right |\)
c) tanθ=\(\left |l_1 \,l_2+m_1 \,m_2+n_1 \,n_2\right |\)
d) cosθ=\(\left |l_1 \,l_2+m_1 \,m_2+n_1 \,n_2\right |\)